Support Language Overrides for printWidth in settings.JSON

[dbagley1]

Closes #3093. Adds support for language overrides for the prettier.printWidth configuration option in settings.json.

• Updated the extension manifest to specify the language-overridable scope on prettier.printWidth

• Updated getConfig() to respect language-specific settings by accepting activeTextEditor.document as the scope parameter. (workspace.getConfiguration() ignores language overrides when a URI is passed as the scope.)

• Updated PrettierEditService to pass the activeTextEditor.document as the scope parameter if available and fallback to URI.

• Run tests

• Update the [CHANGELOG.md] with a summary of your changes

[SomaticIT]

Hello,
Good job!
Is it possible to add other options in language overrides?

[dbagley1]

Thanks! Yes, updating other settings in the manifest with the language-overridable scope should work

[dbagley1]

@SomaticIT @ntotten I'm a new contributor, is there any other action needed from me to progress this PR?

[SomaticIT]

I'm not a contributor of this repo.
However, I really suggest that you set other settings with the language-overridable to make this PR feature-complete.

Here is a list of properties that should be migrated:

• prettier.tabWidth
• prettier.singleQuote
• prettier.trailingComma
• prettier.bracketSpacing
• prettier.singleAttributePerLine
• prettier.bracketSameLine
• prettier.jsxBracketSameLine
• prettier.semi
• prettier.requirePragma
• prettier.insertPragma
• prettier.useTabs
• prettier.proseWrap
• prettier.arrowParens
• prettier.jsxSingleQuote
• prettier.htmlWhitespaceSensitivity
• prettier.vueIndentScriptAndStyle
• prettier.endOfLine
• prettier.quoteProps
• prettier.embeddedLanguageFormatting

When, this is done, you should rename your PR like this:
Support Language Overrides on every .prettierrc options

This will make your PR more reusable and more attractive to core maintainers.

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