feat!: drop modules, general refactor and cleanup

runtime/queries/gosum/highlights.scm

@@ -0,0 +1,32 @@
+[
+  "alpha"
+  "beta"
+  "dev"
+  "pre"
+  "rc"
+  "+incompatible"
+] @keyword
+
+(module_path) @string.special.url
+
+(module_version) @string.special
+
+(hash_version) @attribute
+
+(hash) @string.special.symbol
+
+[
+  (number)
+  (number_with_decimal)
+  (hex_number)
+] @number
+
+(checksum
+  "go.mod" @string)
+
+[
+  ":"
+  "."
+  "-"
+  "/"
+] @punctuation.delimiter