Add ability to start vscode just to write out a blob of all config details - for Microsoft/vscode-bing#7

Upload configuration file during the build to the same azure storage account as sourcemaps

Fixes #34601

Fixes #34316

Enables contributed injection grammars to specify an embedded language for their injection targets:

```json
"grammars": [
  {
	"scopeName": "meta.embedded.css",
	"path": "./syntaxes/injection.json",
	"injectTo": [
	  "source.js",
	  "source.jsx",
	  "source.ts",
	  "source.tsx"
	],
	"embeddedLanguages": {
	  "meta.embedded.css": "css"
	}
  }
]
```

Have `workspace.applyEdit` correctly account for model version changes and reply with false if a model was loaded and changed in the meantime

fixes #31906

- fixes #33270
- fixes #33328