Refactor Paper Tonic Modern colorscheme and enhance semantic highlighting

- Updated highlights.scm to improve CSS, HTML, and data attribute captures with higher priority.
- Added a new Lua function to display highlight group and color information under the cursor.
- Expanded editor, semantic, syntax, and TreeSitter highlight groups for better visual consistency across languages.
- Created test files for PHP, HTML, CSS, and Lua to validate syntax highlighting.
- Implemented a shell script to test semantic highlights in a Neovim session.
- Simplified colorscheme loading process by removing unnecessary plugin specifications.

after/queries/html/highlights.scm

@@ -1,17 +1,20 @@
-(start_tag
-	(attribute
-		(attribute_name) @ClassNameAttribute (#eq? @ClassNameAttribute "class")
-		(quoted_attribute_value
-			(attribute_value) @CssClassName )))
+;extends
 
-(start_tag
-	(attribute
-		(attribute_name) @IdAttribute (#eq? @IdAttribute "id")
-		(quoted_attribute_value
-			(attribute_value) @CssIdentifier )))
+; HTML class attribute values - should match CSS .class-name color
+; Priority: Must override default @string capture (priority 99)
+(attribute
+  (attribute_name) @ClassNameAttribute (#eq? @ClassNameAttribute "class")
+  (quoted_attribute_value
+    (attribute_value) @CssClassName (#set! priority 200)))
 
-(start_tag
-	(attribute
-		(attribute_name) @DataAttribute (#match? @DataAttribute "^data-")
-		(quoted_attribute_value
-			(attribute_value) @DataAttributeValue )))
+; HTML id attribute values - should match CSS #id-name color
+(attribute
+  (attribute_name) @IdAttribute (#eq? @IdAttribute "id")
+  (quoted_attribute_value
+    (attribute_value) @CssIdentifier (#set! priority 200)))
+
+; HTML data-* attributes
+(attribute
+  (attribute_name) @DataAttribute (#match? @DataAttribute "^data-")
+  (quoted_attribute_value
+    (attribute_value) @DataAttributeValue (#set! priority 200)))