Chore: Fix vscode settings and add new recommended extensions

[danceratopz]

There are new extensions for flake8 and mypy. We need to start using them and move the relevant linting and mypy settings out of the main Python config and the settings for these new extensions.

Upon VS Code startup:

2023-11-09 07:04:45.483 [error] Following setting is deprecated: "python.linting.flake8Enabled"
2023-11-09 07:04:45.483 [error] All settings starting with "python.linting." are deprecated and can be removed from settings.
2023-11-09 07:04:45.483 [error] Linting features have been moved to separate linter extensions.
2023-11-09 07:04:45.483 [error] See here for more information: https://code.visualstudio.com/docs/python/linting
2023-11-09 07:04:45.483 [error] Please install "flake8" extension: https://marketplace.visualstudio.com/items?itemName=ms-python.flake8
2023-11-09 07:04:45.483 [error] Following setting is deprecated: "python.linting.mypyEnabled"
2023-11-09 07:04:45.483 [error] All settings starting with "python.linting." are deprecated and can be removed from settings.
2023-11-09 07:04:45.483 [error] Linting features have been moved to separate linter extensions.
2023-11-09 07:04:45.483 [error] See here for more information: https://code.visualstudio.com/docs/python/linting
2023-11-09 07:04:45.483 [error] Please install "mypy" extension: https://marketplace.visualstudio.com/items?itemName=ms-python.mypy-type-checker