feat: tags support

Author: aizigao

languages/vue/outline.scm

@@ -1,4 +1,5 @@
 
+
 ; Comments appear as annotations in the outline
 (comment) @annotation
 
@@ -11,7 +12,21 @@
       (quoted_attribute_value (attribute_value) @annotation))?)
   (#eq? @_lang "lang")) @item
 
+Custom elements/components (PascalCase or hyphenated) - self-closing tags
+(
+  (element
+    (self_closing_tag
+      (tag_name) @name))
+  (#match? @name "^[A-Z]|-")
+) @item
+
+; normal tags
+(element
+  (start_tag
+    (tag_name) @name)) @item
+
 ; ======= script ======
+
 (script_element
   (start_tag
     (tag_name) @name