Feat: Add syntax highlighting for a lot more languages

grammar/diff.scm

@@ -0,0 +1,57 @@
+;; #99ADBF #000000 0 1 0 1
+(comment) @comment @spell
+
+;; #A6E3A1 #000000 0 0 0 2
+(addition) @diff.plus
+
+;; #F07178 #000000 0 0 0 2
+(deletion) @diff.minus
+
+;; #D2A6FF #000000 0 0 0 0
+[
+  (new_file)
+  (old_file)
+] @file
+
+;; #D2A6FF #000000 0 0 0 1
+(commit) @constant
+
+;; #7dcfff #000000 0 0 0 2
+(location) @attribute
+
+;; #D2A6FF #000000 0 0 0 1
+(command
+  "diff" @function
+  (argument) @variable.parameter)
+
+;; #7dcfff #000000 0 0 0 6
+(mode) @number
+
+;; #888888 #000000 0 0 0 3
+[
+  ".."
+  "+"
+  "++"
+  "+++"
+  "++++"
+  "-"
+  "--"
+  "---"
+  "----"
+] @punctuation.special
+
+;; #7dcfff #000000 0 0 0 2
+[
+  (binary_change)
+  (similarity)
+  (file_change)
+] @label
+
+;; #D2A6FF #000000 0 0 0 1
+(index
+  "index" @keyword)
+
+;; #FF8F40 #000000 0 0 0 1
+(similarity
+  (score) @number
+  "%" @number)