Document symbols

[wkillerud]

This feature enables the Document Symbols request, as well as other features that depend on it internally.

• Implementation
  • https://github.com/wkillerud/some-sass/blob/35cd68d30100f28d50b83482aa82eddd2c2d74bb/packages/vscode-css-languageservice/src/services/cssNavigation.ts#L330
  • https://github.com/wkillerud/some-sass/blob/main/packages/language-services/src/features/find-symbols.ts
• Tests
  • https://github.com/wkillerud/some-sass/blob/35cd68d30100f28d50b83482aa82eddd2c2d74bb/packages/vscode-css-languageservice/src/test/sass/sassNavigation.test.ts#L109
  • https://github.com/wkillerud/some-sass/blob/main/packages/language-services/src/features/__tests__/find-symbols-document.test.ts