feat(highlight): migrate to tree-house with Helix queries

Replace tree-sitter-highlight dep with tree-house crate from Helix
editor. Add ropey dependency required by tree-house.

Reorganize query files from Helix's runtime/queries/ for all 14
supported languages:
- bash, c, css, go, html, javascript, json, markdown, nix, python,
  rust, toml, typescript, yaml
- Include ecma, _javascript, _typescript base dirs for JS/TS inheritance
- Copy highlights.scm, injections.scm, locals.scm where available

This commit establishes the foundation; highlight.rs implementation
will follow in subsequent commits.

queries/json/highlights.scm

@@ -0,0 +1,20 @@
+[
+  (true)
+  (false)
+] @constant.builtin.boolean
+(null) @constant.builtin
+(number) @constant.numeric
+
+(string) @string
+(escape_sequence) @constant.character.escape
+
+(pair
+  key: (_) @variable.other.member)
+
+"," @punctuation.delimiter
+[
+  "["
+  "]"
+  "{"
+  "}"
+] @punctuation.bracket