feat: started work on pinboard mechanics

modules/you_done_it/pinboard.cpp

@@ -0,0 +1,14 @@
+#include "pinboard.h"
+#include "pinned_photo.h"
+
+void Pinboard::_bind_methods() {
+}
+
+void Pinboard::enter_tree() {
+	connect("body_entered", callable_mp(this, &self_type::on_body_entered));
+}
+
+void Pinboard::on_body_entered(Node2D *node) {
+	if (PinnedPhoto * photo{ cast_to<PinnedPhoto>(node) }) {
+	}
+}