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/go/locals.scm

@@ -0,0 +1,25 @@
+; Scopes
+
+[
+  (function_declaration)
+  (method_declaration)
+  (type_declaration)
+  (block)
+] @local.scope
+
+; Definitions
+
+(parameter_declaration (identifier) @local.definition.variable.parameter)
+(variadic_parameter_declaration (identifier) @local.definition.variable.parameter)
+
+(const_declaration
+ (const_spec
+  name: (identifier) @local.definition.constant))
+
+; References
+
+(identifier) @local.reference
+
+; Field names in struct literals are identifier rather than field_identifier,
+; these cannot be locals.
+(keyed_element . (literal_element (identifier) @variable.other.member))