Add version to pyproject.toml

Build started to fail with:

```
⚠️  Warning: `project.version` field is required in pyproject.toml unless it is present in the `project.dynamic` list
📦 Including license file "/home/runner/work/libsql-experimental-python/libsql-experimental-python/LICENSE.md"
🔗 Found pyo3 bindings
🐍 Found CPython 3.13 at /home/runner/work/libsql-experimental-python/libsql-experimental-python/.env/bin/python
📡 Using build options features from pyproject.toml
⚠️  Warning: `project.version` field is required in pyproject.toml unless it is present in the `project.dynamic` list
💥 maturin failed
  Caused by: Cannot build without valid version information. You need to specify either `project.version` or `project.dynamic = ["version"]` in pyproject.toml.
Error: Process completed with exit code 1.
```

Author: penberg

pyproject.toml

@@ -4,6 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "libsql-experimental"
+version = "0.0.41"
 requires-python = ">=3.7"
 classifiers = [
     "Programming Language :: Rust",