Add support for discovery via DHCP (#45087)

* Add support for discovery via DHCP

* additional tesla ouis

* merge tests

* dhcp test

* merge requirements test

* dhcp test

* dhcp discovery

* dhcp discovery

* pylint

* pylint

* pylint

* fix

* Add matching tests

* 100% cover

* cleanup

* fix codespell

* Update exception handling

* remove unneeded comment

* fix options handling exception

* fix options handling exception

homeassistant/loader.py

@@ -25,6 +25,7 @@ from typing import (
     cast,
 )
 
+from homeassistant.generated.dhcp import DHCP
 from homeassistant.generated.mqtt import MQTT
 from homeassistant.generated.ssdp import SSDP
 from homeassistant.generated.zeroconf import HOMEKIT, ZEROCONF
@@ -171,6 +172,20 @@ async def async_get_zeroconf(hass: "HomeAssistant") -> Dict[str, List[Dict[str,
     return zeroconf
 
 
+async def async_get_dhcp(hass: "HomeAssistant") -> List[Dict[str, str]]:
+    """Return cached list of dhcp types."""
+    dhcp: List[Dict[str, str]] = DHCP.copy()
+
+    integrations = await async_get_custom_components(hass)
+    for integration in integrations.values():
+        if not integration.dhcp:
+            continue
+        for entry in integration.dhcp:
+            dhcp.append({"domain": integration.domain, **entry})
+
+    return dhcp
+
+
 async def async_get_homekit(hass: "HomeAssistant") -> Dict[str, str]:
     """Return cached list of homekit models."""
 
@@ -356,6 +371,11 @@ class Integration:
         """Return Integration zeroconf entries."""
         return cast(List[str], self.manifest.get("zeroconf"))
 
+    @property
+    def dhcp(self) -> Optional[list]:
+        """Return Integration dhcp entries."""
+        return cast(List[str], self.manifest.get("dhcp"))
+
     @property
     def homekit(self) -> Optional[dict]:
         """Return Integration homekit entries."""