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/c/highlights.scm

@@ -0,0 +1,167 @@
+
+(identifier) @variable
+
+((identifier) @constant
+  (#match? @constant "^[A-Z][A-Z\\d_]*$"))
+
+"sizeof" @keyword
+
+[
+  "enum"
+  "struct"
+  "typedef"
+  "union"
+] @keyword.storage.type
+
+[
+  (type_qualifier)
+  (storage_class_specifier)
+] @keyword.storage.modifier
+
+[
+  "goto"
+  "break"
+  "continue"
+] @keyword.control
+
+[
+  "do"
+  "for"
+  "while"
+] @keyword.control.repeat
+
+[
+  "if"
+  "else"
+  "switch"
+  "case"
+  "default"
+] @keyword.control.conditional
+
+"return" @keyword.control.return
+
+[
+  "defined"
+  "#define"
+  "#elif"
+  "#else"
+  "#endif"
+  "#if"
+  "#ifdef"
+  "#ifndef"
+  "#include"
+  (preproc_directive)
+] @keyword.directive
+
+"..." @punctuation
+
+["," "." ":" "::" ";" "->"] @punctuation.delimiter
+
+["(" ")" "[" "]" "{" "}" "[[" "]]"] @punctuation.bracket
+
+[
+  "+"
+  "-"
+  "*"
+  "/"
+  "++"
+  "--"
+  "%"
+  "=="
+  "!="
+  ">"
+  "<"
+  ">="
+  "<="
+  "&&"
+  "||"
+  "!"
+  "&"
+  "|"
+  "^"
+  "~"
+  "<<"
+  ">>"
+  "="
+  "+="
+  "-="
+  "*="
+  "/="
+  "%="
+  "<<="
+  ">>="
+  "&="
+  "^="
+  "|="
+  "?"
+] @operator
+
+(conditional_expression ":" @operator) ; After punctuation
+
+(pointer_declarator "*" @type.builtin) ; After Operators
+(abstract_pointer_declarator "*" @type.builtin)
+
+
+[(true) (false)] @constant.builtin.boolean
+
+(enumerator name: (identifier) @type.enum.variant)
+
+(string_literal) @string
+(system_lib_string) @string
+
+(null) @constant
+(number_literal) @constant.numeric
+(char_literal) @constant.character
+(escape_sequence) @constant.character.escape
+
+(field_identifier) @variable.other.member
+(statement_identifier) @label
+(type_identifier) @type
+(primitive_type) @type.builtin
+(sized_type_specifier) @type.builtin
+
+(call_expression
+  function: (identifier) @function)
+(call_expression
+  function: (field_expression
+    field: (field_identifier) @function))
+(call_expression (argument_list (identifier) @variable))
+(function_declarator
+  declarator: [(identifier) (field_identifier)] @function)
+
+; Up to 6 layers of declarators
+(parameter_declaration
+  declarator: (identifier) @variable.parameter)
+(parameter_declaration
+  (_
+    (identifier) @variable.parameter))
+(parameter_declaration
+  (_
+    (_
+      (identifier) @variable.parameter)))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (identifier) @variable.parameter))))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (_
+          (identifier) @variable.parameter)))))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (_
+          (_
+            (identifier) @variable.parameter))))))
+
+(preproc_function_def
+  name: (identifier) @function.special)
+
+(attribute
+  name: (identifier) @attribute)
+
+(comment) @comment