Add push to talk voice assistant (#4648)

* Add push to talk voice assistant

* Refactor most code into voice_assistant

* Make voice_assistant the component and remove push_to_talk (can be done in yaml)

* Fix component setup

* Always AF_INET to match serverside

* Fix microphone and media player co-existence

* Format

* Update codeowners

* Update test file

* Fix endifs

* nullptr not NULL

* clang-tidy

* Format

* fixup: Add VA event data

* Generate proto

* Parse and log events

* Add default to switch

* Fix

* Add mic/va to test5

esphome/components/voice_assistant/voice_assistant.h

@@ -0,0 +1,50 @@
+#pragma once
+
+#include "esphome/core/automation.h"
+#include "esphome/core/component.h"
+#include "esphome/core/helpers.h"
+
+#include "esphome/components/api/api_pb2.h"
+#include "esphome/components/api/api_server.h"
+#include "esphome/components/microphone/microphone.h"
+#include "esphome/components/socket/socket.h"
+
+namespace esphome {
+namespace voice_assistant {
+
+class VoiceAssistant : public Component {
+ public:
+  void setup() override;
+  float get_setup_priority() const override;
+  void start(struct sockaddr_storage *addr, uint16_t port);
+
+  void set_microphone(microphone::Microphone *mic) { this->mic_ = mic; }
+
+  void request_start();
+  void signal_stop();
+
+  void on_event(const api::VoiceAssistantEventResponse &msg);
+
+ protected:
+  std::unique_ptr<socket::Socket> socket_ = nullptr;
+  struct sockaddr_storage dest_addr_;
+
+  microphone::Microphone *mic_{nullptr};
+
+  bool running_{false};
+};
+
+template<typename... Ts> class StartAction : public Action<Ts...>, public Parented<VoiceAssistant> {
+ public:
+  void play(Ts... x) override { this->parent_->request_start(); }
+};
+
+template<typename... Ts> class StopAction : public Action<Ts...>, public Parented<VoiceAssistant> {
+ public:
+  void play(Ts... x) override { this->parent_->signal_stop(); }
+};
+
+extern VoiceAssistant *global_voice_assistant;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
+
+}  // namespace voice_assistant
+}  // namespace esphome