feat: add language-override support for VSCode configuration

[x] Run tests
[x] Update the CHANGELOG.md with a summary of your

Closes #3093

In certain cases it may be preferential to have different fallback configuration based on the language of the document, for example, the developer may have a preference towards tabs, but would still be required to use spaces for .yml files.

This pull request adds the option to override Prettier configuration, defined within VSCode's settings.json file, based on a language identifier; we are then able to fulfil the example above with the following configuration:

{
  "[yml]": {
    "prettier.useTabs": false,
    "prettier.tabWidth": 2
  },
  "editor.defaultFormatter": "esbenp.prettier-vscode",
  "prettier.useTabs": true
}

Language overridable configuration:

Print width, prettier.printWidth
Tab width, prettier.tabWidth
Tabs, prettier.useTabs
Semicolons, prettier.semi
Quotes, prettier.singleQuote
Quote props, prettier.quoteProps
JSX quotes, prettier.jsxSingleQuote
Trailing commas, prettier.trailingComma
Bracket spacing, prettier.bracketSpacing
Bracket line, prettier.bracketSameLine
JSX brackets, prettier.jsxBracketSameLine
Arrow function parentheses, prettier.arrowParens
Require pragma, prettier.requirePragma
Insert pragma, prettier.insertPragma
Prose wrap, prettier.proseWrap
HTML whitespace sensitivity, prettier.htmlWhitespaceSensitivity
Vue files scripts and style tag indentation, prettier.vueIndentScriptAndStyle
End of line, prettier.endOfLine
Embedded language formatting, prettier.embeddedLanguageFormatting
Single attribute per line, prettier.singleAttributePerLine

Question

I considered a further fallback whereby the editor's configuration could be taken into account for mappable configuration, namely tabs vs spaces and tab sizes, for example:

editor.tabSize -> prettier.tabWidth
editor.insertSpaces -> prettier.useTabs

This would allow a developer to utilize their existing VSCode configuration for some formatting, without requiring additional prettier.* settings to be defined.

I wasn't sure how that change would be received however, so wanted to submit this for review and gather thoughts before making any further changes.

prettier / prettier-vscode

feat: add language-override support for VSCode configuration #3327

Question