Always include Cocoa for NSFoundation

vendor/darwin/Foundation/objc.odin

@@ -1,6 +1,8 @@
 package objc_Foundation
 
 foreign import "system:Foundation.framework"
+// NOTE: Most of our bindings are reliant on Cocoa (everything under appkit) so just unconditionally import it
+@(require) foreign import "system:Cocoa.framework"
 
 import "core:intrinsics"
 import "core:c"
@@ -76,4 +78,4 @@ objc_class_internals :: struct {
 	cache:         rawptr,
 	protocols:     rawptr,
 
-}
+}