Add TSTag and TSTagDelimiter groups

These groups will be added for use with xml-like tags such as html and
jsx.

CONTRIBUTING.md

@@ -164,6 +164,15 @@ Mainly for markup languages.
 @text.uri
 ```
 
+#### Tags
+
+Used for xml-like tags
+
+```
+@tag
+@tag.delimiter
+```
+
 ### Locals
 
 ```

lua/nvim-treesitter/highlight.lua

@@ -68,6 +68,10 @@ hlmap["text.title"] = "TSTitle"
 hlmap["text.literal"] = "TSLiteral"
 hlmap["text.uri"] = "TSURI"
 
+-- Tags
+hlmap["tag"] = "TSTag"
+hlmap["tag.delimiter"] = "TSTagDelimiter"
+
 hlmap["none"] = "TSNone"
 
 function M.attach(bufnr, lang)

queries/html/highlights.scm

@@ -1,4 +1,4 @@
-(tag_name) @type
+(tag_name) @tag
 (erroneous_end_tag_name) @error
 (doctype) @constant
 (attribute_name) @property
@@ -13,4 +13,4 @@
  ">"
  "</"
  "/>"
- ] @punctuation.bracket
+ ] @tag.delimiter