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/html/highlights.scm

@@ -0,0 +1,47 @@
+(tag_name) @tag
+(erroneous_end_tag_name) @error
+(doctype) @constant
+(attribute_name) @attribute
+(entity) @string.special.symbol
+(comment) @comment
+
+((attribute
+  (attribute_name) @attribute
+  (quoted_attribute_value (attribute_value) @markup.link.url))
+ (#any-of? @attribute "href" "src"))
+
+((element
+  (start_tag
+    (tag_name) @tag)
+  (text) @markup.link.label)
+  (#eq? @tag "a"))
+
+(attribute [(attribute_value) (quoted_attribute_value)] @string)
+
+((element
+  (start_tag
+    (tag_name) @tag)
+  (text) @markup.bold)
+  (#any-of? @tag "strong" "b"))
+
+((element
+  (start_tag
+    (tag_name) @tag)
+  (text) @markup.italic)
+  (#any-of? @tag "em" "i"))
+
+((element
+  (start_tag
+    (tag_name) @tag)
+  (text) @markup.strikethrough)
+  (#any-of? @tag "s" "del"))
+
+[
+  "<"
+  ">"
+  "</"
+  "/>"
+  "<!"
+] @punctuation.bracket
+
+"=" @punctuation.delimiter

queries/html/injections.scm

@@ -0,0 +1,10 @@
+((comment) @injection.content
+ (#set! injection.language "comment"))
+
+((script_element
+  (raw_text) @injection.content)
+ (#set! injection.language "javascript"))
+
+((style_element
+  (raw_text) @injection.content)
+ (#set! injection.language "css"))