render spring icons as gutters

[Eskibear]

This PR uses ThemableDecorationRenderOptions.gutterIconPath to render spring gutter icons, while previously it's mimic by adding icons/placeholders using :before styling for each line.

[Eskibear]

Pros:

• No wired bugs when turning on/off word wrapping. should fix When line wrapping is enabled, editor code alignment lines are messed up. #257
• No need to re-calculate decorations on document change, vscode handles that. Better performance.
• Potential context menus on right click. Proposed in editor/lineNumber/context proposed menu vscode#175945

Cons:

• Currenly no hover messages directly on the icon, you have to hover on the line in editor.
• You cannot set breakpoint on the line. See Decorations with gutter icons hide breakpoint icons vscode#5923
  • not a big impact here as beans/mappings are all annotations

[Eskibear]

Demo:

spring-gutter-native.mp4

[nickzhums]

Nice, qq, at 0:04, when you clicked the icon, what happened?

[Eskibear]

Nice, qq, at 0:04, when you clicked the icon, what happened?

Nothing happens now. But with vscode's proposed API, we can put some commands there. The UI is Like something as below:

[nickzhums]

Nice, qq, at 0:04, when you clicked the icon, what happened?

Nothing happens now. But with vscode's proposed API, we can put some commands there. The UI is Like something as below:

Nice, that would be useful in the future. Looks damn good to me

[Eskibear]

Follow-up:

• Potential context menus on right click. Proposed in editor/lineNumber/context proposed menu vscode#175945 When the API is ready, we can register some useful commands there.