feat: add Objective-C

queries/objc/folds.scm

@@ -0,0 +1,20 @@
+; inherits: c
+
+[
+  (class_declaration)
+  (class_interface)
+  (class_implementation)
+  (protocol_declaration)
+  (property_declaration)
+  (method_declaration)
+  (struct_declaration)
+  (struct_declarator)
+  (try_statement)
+  (catch_statement)
+  (finally_statement)
+  (throw_statement)
+  (block_literal)
+  (ms_asm_block)
+  (dictionary_literal)
+  (array_literal)
+] @fold