feat: add highlight

helix/highlights/highlights.scm

@@ -0,0 +1,16 @@
+;; highlights.scm for noil
+
+;; Operations (e.g., DELETE, ADD, etc.)
+(op_delete) @diff.minus.gutter
+(op_add) @diff.plus.gutter
+(op_move) @diff.delta.moved
+(operation) @constant.character
+
+;; Prefix identifiers (e.g., dwzxz, c444y)
+(prefix) @variable.parameter
+
+;; File paths
+(file_path) @variable.other.member
+
+;; The colon (separator)
+":" @diff.plus.gutter