Rename the safe_mode integration to recovery_mode (#102581)

* Rename safe mode integration to recovery mode

* Update code

tests/components/recovery_mode/test_init.py

@@ -0,0 +1,13 @@
+"""Tests for the Recovery Mode integration."""
+from homeassistant.core import HomeAssistant
+from homeassistant.setup import async_setup_component
+
+from tests.common import async_get_persistent_notifications
+
+
+async def test_works(hass: HomeAssistant) -> None:
+    """Test Recovery Mode works."""
+    assert await async_setup_component(hass, "recovery_mode", {})
+    await hass.async_block_till_done()
+    notifications = async_get_persistent_notifications(hass)
+    assert len(notifications) == 1