[Feature-Request] Add support for Python Free-Threading builds.

[mbechard]

Hey, I just tried installing this via pip for python3.14t
python3.14t.exe -m pip install depthai
And it fails.
As a first step, just getting the compilation/linking to work with python3.14t.exe/python3.14t.lib/python3.14t.dll would move things forward. Free-threading processes could still import depthai, but the GIL would be re-enabled.
Full support for free-threading could come as a second step.

        Generating Code...
      Traceback (most recent call last):
        File "C:\Python314\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 389, in <module>
          main()
          ~~~~^^
        File "C:\Python314\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 373, in main
          json_out["return_val"] = hook(**hook_input["kwargs"])
                                   ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
        File "C:\Python314\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 280, in build_wheel
          return _build_backend().build_wheel(
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
              wheel_directory, config_settings, metadata_directory
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\build_meta.py", line 441, in build_wheel
          return _build(['bdist_wheel', '--dist-info-dir', str(metadata_directory)])
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\build_meta.py", line 429, in _build
          return self._build_with_temp_dir(
                 ~~~~~~~~~~~~~~~~~~~~~~~~~^
              cmd,
              ^^^^
          ...<3 lines>...
              self._arbitrary_args(config_settings),
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\build_meta.py", line 410, in _build_with_temp_dir
          self.run_setup()
          ~~~~~~~~~~~~~~^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\build_meta.py", line 520, in run_setup
          super().run_setup(setup_script=setup_script)
          ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\build_meta.py", line 317, in run_setup
          exec(code, locals())
          ~~~~^^^^^^^^^^^^^^^^
        File "<string>", line 213, in <module>
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\__init__.py", line 117, in setup
          return distutils.core.setup(**attrs)  # type: ignore[return-value]
                 ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\core.py", line 186, in setup
          return run_commands(dist)
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\core.py", line 202, in run_commands
          dist.run_commands()
          ~~~~~~~~~~~~~~~~~^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\dist.py", line 1000, in run_commands
          self.run_command(cmd)
          ~~~~~~~~~~~~~~~~^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\dist.py", line 1107, in run_command
          super().run_command(command)
          ~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\dist.py", line 1019, in run_command
          cmd_obj.run()
          ~~~~~~~~~~~^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\command\bdist_wheel.py", line 370, in run
          self.run_command("build")
          ~~~~~~~~~~~~~~~~^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\cmd.py", line 341, in run_command
          self.distribution.run_command(command)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\dist.py", line 1107, in run_command
          super().run_command(command)
          ~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\dist.py", line 1019, in run_command
          cmd_obj.run()
          ~~~~~~~~~~~^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\command\build.py", line 135, in run
          self.run_command(cmd_name)
          ~~~~~~~~~~~~~~~~^^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\cmd.py", line 341, in run_command
          self.distribution.run_command(command)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\dist.py", line 1107, in run_command
          super().run_command(command)
          ~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "C:\Users\Malcolm\AppData\Local\Temp\pip-build-env-hl4qkswv\overlay\Lib\site-packages\setuptools\_distutils\dist.py", line 1019, in run_command
          cmd_obj.run()
          ~~~~~~~~~~~^^
        File "<string>", line 93, in run
        File "<string>", line 211, in build_extension
        File "C:\Python314\Lib\subprocess.py", line 419, in check_call
          raise CalledProcessError(retcode, cmd)
      subprocess.CalledProcessError: Command '['cmake', '--build', '.', '--config', 'Release', '--', '/m']' returned non-zero exit status 1.
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for depthai
Failed to build depthai