feat!: drop modules, general refactor and cleanup

runtime/queries/hocon/folds.scm

@@ -0,0 +1,4 @@
+[
+  (object)
+  (array)
+] @fold

runtime/queries/hocon/highlights.scm

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+(comment) @comment @spell
+
+(null) @constant.builtin
+
+[
+  (true)
+  (false)
+] @boolean
+
+(number) @number
+
+(unit) @keyword
+
+(string) @string
+
+(multiline_string) @string
+
+(string
+  (escape_sequence) @string.escape)
+
+(unquoted_string) @string
+
+[
+  "url"
+  "file"
+  "classpath"
+  "required"
+] @keyword
+
+(include
+  "include" @keyword.import)
+
+(substitution
+  [
+    "${"
+    "${?"
+    "}"
+  ] @punctuation.special)
+
+(substitution
+  (_) @variable.member)
+
+(path
+  (_) @variable.member)
+
+(value
+  [
+    ":"
+    "="
+    "+="
+  ] @operator)
+
+[
+  "("
+  ")"
+  "["
+  "]"
+  "{"
+  "}"
+] @punctuation.bracket
+
+"," @punctuation.delimiter
+
+(unquoted_path
+  "." @punctuation.delimiter)

runtime/queries/hocon/injections.scm

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+((comment) @injection.content
+  (#set! injection.language "comment"))