[code-infra] Polish VS Code DX

[oliviertassinari]

It looks like this was due for a refresh.

.vscode/settings.json

As I understand it, a baseline version of this is supposed to be stored on git (then people can add their settings to further customize it). Proof:

• https://github.com/microsoft/vscode/blob/main/.vscode/settings.json
• https://github.com/vercel/next.js/blob/canary/.vscode/settings.json

I have tried to only have the least opinionated settings.

.editorconfig

Now that we have .mdx and .tsx files, this is due for a refresh. We also started to stop relying on trim_trailing_whitespace for markdown line break (but instead use \). So we can apply this everywhere. See #34762.

I also got annoyed with the UX on https://mui.com/toolpad/

.gitignore

Remove .vscode, per VS Code codebase, they don't do this.

.vscode/extensions.json

I suspect that those mui/base-ui#1151 got introduced because the right VS Code extension wasn't installed.

.vscode/launch.json

This is for

I'm not aware anyone uses it. We would need to clean up it.

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Same PR open in all the repositories ⬇️

[mui-bot]

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Bundle size report

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