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/toml/highlights.scm

@@ -0,0 +1,48 @@
+; Properties
+;-----------
+
+(table [
+  (bare_key)
+  (dotted_key)
+  (quoted_key)
+] @type)
+
+(table_array_element [
+  (bare_key)
+  (dotted_key)
+  (quoted_key)
+] @type)
+
+(pair [
+  (bare_key)
+  (dotted_key)
+  (quoted_key)
+] @variable.other.member)
+
+; Literals
+;---------
+
+(boolean) @constant.builtin.boolean
+(comment) @comment
+(string) @string
+(integer) @constant.numeric.integer
+(float) @constant.numeric.float
+(offset_date_time) @string.special
+(local_date_time) @string.special
+(local_date) @string.special
+(local_time) @string.special
+
+; Punctuation
+;------------
+
+"." @punctuation.delimiter
+"," @punctuation.delimiter
+
+"=" @operator
+
+"[" @punctuation.bracket
+"]" @punctuation.bracket
+"[[" @punctuation.bracket
+"]]" @punctuation.bracket
+"{" @punctuation.bracket
+"}" @punctuation.bracket