feat(swift): fold queries

queries/swift/folds.scm

@@ -0,0 +1,35 @@
+; format-ignore
+[
+  (protocol_body)               ; protocol Foo { ... }
+  (class_body)                  ; class Foo { ... }
+  (enum_class_body)             ; enum Foo { ... }
+  (function_body)               ; func Foo (...) {...}
+  (computed_property)           ; { ... }
+
+  (computed_getter)             ; get { ... }
+  (computed_setter)             ; set { ... }
+
+  (do_statement)
+  (if_statement)
+  (for_statement)
+  (switch_statement)
+  (while_statement)
+  (guard_statement)
+  (switch_entry)
+
+  (type_parameters)             ; x<Foo>
+  (tuple_type)                  ; (...)
+  (array_type)                  ; [String]
+  (dictionary_type)             ; [Foo: Bar]
+
+  (call_expression)             ; callFunc(...)
+  (tuple_expression)            ; ( foo + bar )
+  (array_literal)               ; [ foo, bar ]
+  (dictionary_literal)          ; [ foo: bar, x: y ]
+  (lambda_literal) 
+  (willset_didset_block)
+  (willset_clause)
+  (didset_clause)
+
+  (import_declaration)+
+] @fold