Improve the Tree-Sitter inspector

[narnaud]

After some discussion, here is how we want to improve the Tree-Sitter inspector

• [ ] Create a CodeView that is a split view with the text editor on the left, and the TS tree on the right

  • Splitter between the 2
  • By default, the tree is not visible (splitter on the right
  • A button to show/hide the tree (see how we handle buttons in the QmlView)

• [ ] Add a TreeSitter Query dock (same dock area as the script dock

  • Just a text editor to type TS query
  • Show results (like in the inspector)
  • Show a wiggle on the error line
  • Add syntax highlighting (use the scheme syntax highlighter)
  • Add a way to load/save (we could use the scm extension for that)

• [ ] Remove the TreeSitter inspector completely

[narnaud]

Here is a proposal:

• Create a CodeView that could be split, with the code on the left and the TreeSitter tree on the right (one button click will show/hide it), something like Neovim TreeSitter
• Add a dock for writing TreeSitter query, that you could save and load (apparently the extension is .scm)

This is completely removing the current dialog, but better integrate TreeSitter into Knut.

[LeonMatthesKDAB]

Sounds good overall. The inspector could definitely use some love. It's been working fine but it's UX isn't great right now.

Side Note: .scm stands for scheme. Tree-sitter doesn't actually use scheme syntax, but it's close enough that highlighting, etc. should work fine. We should check whether KSyntaxHighlighter has a lisp/scheme highlighter, which could be good enough.

[narnaud]

It does, and it's already in Knut... we should definitely try that before doing our own...