Use syntax-injection for wikilink decorations

[memeplex]

Please select if your request is either something new or an enhancement

• [x] Enhancement of an existing Feature.
• [ ] Request of a new feature.

Please select the area your request applies to. (Multiple selections are Possible. You can leave blank if you're not sure.)

• [ ] Workspace - VSCode workspace, vaults, Intellisense/autocomplete, Dendron settings
• [ ] Lookup - Dendron's Lookup Command
• [ ] Views - Dendron Preview, Tree View, Side Panels in the UI
• [ ] Schema - Dendron Schemas
• [ ] Pod - Data import from / export to Dendron
• [ ] Publish - External Site Publish
• [x] Markdown - Markdown features, such as syntax support and features

Is your feature request related to a problem? Please describe

Decorations are heavy on resources, show some flickering, don't follow the current theme, aren't easily customizable.

Describe the solution you'd like

Use syntax-injection instead. I've contributed code to Foam and Memo which does that and both PRs have been merged months ago without complaints since then. The solution was easy to implement and got rid of a chunk of decorating code.

Additional context

See detailed description and discussion of the involved issues in:

• https://github.com/svsool/memo/issues/560
• https://github.com/svsool/memo/pull/561
• https://github.com/foambubble/foam/pull/876
• https://github.com/foambubble/foam/pull/890

Advantages of injection over decorations:

• Simpler declarative implementation
• Better performance
• No flickering
• Customizable color (using standard token highlighting settings)
• Color appropriately changes with theme (sensible default that uses link color)

Also notice that https://github.com/dendronhq/dendron/issues/3292 wouldn't be an issue with injections.

[jonathanyeung]

@memeplex - thanks for the suggestion. By syntax injection, are you referring to this VSCode feature? https://code.visualstudio.com/api/language-extensions/syntax-highlight-guide

I haven't personally tried that feature, but from briefly scanning the other issues you linked, I think this approach makes sense and could help perf.

The only part with respect to Dendron wiklinks that would still require decorators is with tags / user tags, which are special wikilinks that get rendered with a colored square via decorators.