feat(superhtml): add superhtml parser and queries

SuperHTML is a templating language used by the zine static site
generator.

lockfile.json

@@ -728,6 +728,9 @@
   "supercollider": {
     "revision": "1a8ee0da9a4f2df5a8a22f4d637ac863623a78a7"
   },
+  "superhtml": {
+    "revision": "3edb67236291d45ba97a79cdac3b91692487a352"
+  },
   "surface": {
     "revision": "f4586b35ac8548667a9aaa4eae44456c1f43d032"
   },

lua/nvim-treesitter/parsers.lua

@@ -2109,6 +2109,18 @@ list.supercollider = {
   maintainers = { "@madskjeldgaard" },
 }
 
+list.superhtml = {
+  install_info = {
+    url = "https://github.com/kristoff-it/superhtml",
+    files = {
+      "src/parser.c",
+      "src/scanner.c",
+    },
+    location = "tree-sitter-superhtml",
+  },
+  maintainers = { "@rockorager" },
+}
+
 list.surface = {
   install_info = {
     url = "https://github.com/connorlay/tree-sitter-surface",

queries/superhtml/highlights.scm

@@ -0,0 +1,44 @@
+(doctype) @constant
+
+(comment) @comment
+
+(tag_name) @tag
+
+((tag_name) @string.special
+  (#any-of? @string.special "super" "extend"))
+
+(attribute_name) @attribute
+
+(attribute_value) @string
+
+((element
+  (start_tag
+    (attribute
+      (attribute_name) @_attribute
+      [
+        (attribute_value) @markup.link.url
+        (quoted_attribute_value
+          (attribute_value) @markup.link.url)
+      ]))
+  (element
+    (start_tag
+      (tag_name) @tag)))
+  (#eq? @tag "super")
+  (#eq? @_attribute "id"))
+
+(element
+  (start_tag
+    (tag_name) @string.special)
+  (#eq? @string.special "super"))
+
+"\"" @string
+
+[
+  "<"
+  ">"
+  "</"
+  "/>"
+  "<!"
+] @punctuation.bracket
+
+"=" @punctuation.delimiter

queries/superhtml/injections.scm

@@ -0,0 +1,7 @@
+((script_element
+  (raw_text) @injection.content)
+  (#set! injection.language "javascript"))
+
+((style_element
+  (raw_text) @injection.content)
+  (#set! injection.language "css"))