chore(devcontainer): clean up settings syntax, extensions

Author: thekaveman

.devcontainer/devcontainer.json

@@ -18,12 +18,13 @@
       },
       // Add the IDs of extensions you want installed when the container is created.
       "extensions": [
-        "bungcip.better-toml",
         "eamodio.gitlens",
         "esbenp.prettier-vscode",
         "mhutchie.git-graph",
         "ms-python.python",
-        "ms-python.vscode-pylance"
+        "ms-python.black-formatter",
+        "ms-python.flake8",
+        "tamasfe.even-better-toml"
       ]
     }
   }

.vscode/settings.json

@@ -1,17 +1,15 @@
 {
   "editor.formatOnSave": true,
+  "editor.defaultFormatter": "esbenp.prettier-vscode",
   "files.encoding": "utf8",
   "files.eol": "\n",
   "files.insertFinalNewline": true,
   "files.trimFinalNewlines": true,
   "files.trimTrailingWhitespace": true,
   "[python]": {
-    "editor.defaultFormatter": "ms-python.python"
+    "editor.defaultFormatter": "ms-python.black-formatter"
   },
-  "python.formatting.provider": "black",
   "python.languageServer": "Pylance",
-  "python.linting.enabled": true,
-  "python.linting.flake8Enabled": true,
   "python.testing.pytestArgs": ["tests"],
   "python.testing.pytestEnabled": true,
   "python.testing.unittestEnabled": false