Create a new DocumentHighlightProvider

[peaceshi]

From https://github.com/microsoft/vscode/blob/42f90e8dad05748780bce1dbf89931fba780b3ed/src/vs/workbench/contrib/codeEditor/browser/inspectEditorTokens/inspectEditorTokens.ts#L118-L132

From https://github.com/microsoft/vscode/blob/42f90e8dad05748780bce1dbf89931fba780b3ed/src/vs/editor/contrib/wordHighlighter/browser/textualHighlightProvider.ts#L17-L76

From https://code.visualstudio.com/api/references/vscode-api#languages.registerDocumentHighlightProvider

From https://code.visualstudio.com/api/references/vscode-api#languages.match

Multiple providers can be registered for a language. In that case providers are sorted by their score and groups sequentially asked for document highlights. The process stops when a provider returns a non-falsy or non-failure result.

[peaceshi]

microsoft/vscode#60232

This issue has some info about providers score.

[peaceshi]

From https://github.com/microsoft/vscode/blob/75ab01332d95b4a82222e35a186645a616207a5e/src/vs/workbench/services/textMate/browser/textMateTokenizationFeature.ts#L11

VSCode does not have a ITextMateTokenizationService API but we can create a new one.