Add copy integration (#3241)

esphome/components/copy/button/copy_button.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/button/button.h"
+
+namespace esphome {
+namespace copy {
+
+class CopyButton : public button::Button, public Component {
+ public:
+  void set_source(button::Button *source) { source_ = source; }
+  void dump_config() override;
+  float get_setup_priority() const override { return setup_priority::DATA; }
+
+ protected:
+  void press_action() override;
+
+  button::Button *source_;
+};
+
+}  // namespace copy
+}  // namespace esphome