Add new Lock core component (#2958)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

esphome/components/template/lock/template_lock.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/automation.h"
+#include "esphome/components/lock/lock.h"
+
+namespace esphome {
+namespace template_ {
+
+class TemplateLock : public lock::Lock, public Component {
+ public:
+  TemplateLock();
+
+  void dump_config() override;
+
+  void set_state_lambda(std::function<optional<lock::LockState>()> &&f);
+  Trigger<> *get_lock_trigger() const;
+  Trigger<> *get_unlock_trigger() const;
+  Trigger<> *get_open_trigger() const;
+  void set_optimistic(bool optimistic);
+  void loop() override;
+
+  float get_setup_priority() const override;
+
+ protected:
+  void control(const lock::LockCall &call) override;
+  void open_latch() override;
+
+  optional<std::function<optional<lock::LockState>()>> f_;
+  bool optimistic_{false};
+  Trigger<> *lock_trigger_;
+  Trigger<> *unlock_trigger_;
+  Trigger<> *open_trigger_;
+  Trigger<> *prev_trigger_{nullptr};
+};
+
+}  // namespace template_
+}  // namespace esphome