feat(tiger): initial support

queries/tiger/folds.scm

@@ -0,0 +1,24 @@
+[
+  (array_expression)
+  (record_expression)
+  (sequence_expression)
+  (if_expression)
+  (while_expression)
+  (for_expression)
+  (let_expression)
+  (function_declaration)
+  (primitive_declaration)
+
+  (record_type)
+
+  (class_declaration)
+  (class_type)
+  (method_declaration)
+] @fold
+
+[
+ (comment)
+ (string_literal)
+] @ignore
+
+; vim: sw=2 foldmethod=marker