feat(ziggy): add ziggy parser and queries

[Ziggy](https://github.com/kristoff-it/ziggy) is a data serialization
format used in the zine static site generator.

lockfile.json

@@ -889,5 +889,8 @@
   },
   "zig": {
     "revision": "eb7d58c2dc4fbeea4745019dee8df013034ae66b"
+  },
+  "ziggy": {
+    "revision": "c66f47bc632c66668d61fa06eda112b41d6e5130"
   }
 }

lua/nvim-treesitter/parsers.lua

@@ -2564,6 +2564,15 @@ list.zig = {
   maintainers = { "@amaanq" },
 }
 
+list.ziggy = {
+  install_info = {
+    url = "https://github.com/kristoff-it/ziggy",
+    files = { "src/parser.c" },
+    location = "tree-sitter-ziggy",
+  },
+  maintainers = { "@rockorager" },
+}
+
 list.templ = {
   install_info = {
     url = "https://github.com/vrischmann/tree-sitter-templ",

queries/ziggy/highlights.scm

@@ -0,0 +1,41 @@
+[
+  (true)
+  (false)
+] @constant.builtin
+
+(null) @constant.builtin
+
+[
+  (integer)
+  (float)
+] @number
+
+(struct_field
+  key: (_) @keyword)
+
+(struct
+  name: (_) @type)
+
+(tag) @function
+
+[
+  (string)
+  (line_string)*
+] @string
+
+(comment) @comment
+
+(escape_sequence) @string.escape
+
+"," @punctuation.delimiter
+
+[
+  "["
+  "]"
+  "{"
+  "}"
+  "("
+  ")"
+] @punctuation.bracket
+
+(top_comment) @comment

queries/ziggy/indents.scm

@@ -0,0 +1,10 @@
+[
+  (struct)
+  (map)
+  (array)
+] @indent.begin
+
+[
+  "]"
+  "}"
+] @indent.end