Add support for importing integrations in the executor (#111336)

* Add support for pre-imports at setup time

alternative solution to #111331

* refactor

* refactor

* refactor

* mark >1.0s integrations

* no point in executor if already loaded

* no point in executor if already loaded

* cleanup

* cleanup

* two more

* one more

* analytics loads a lot more integrations

* cloud

* debug

* psutil, hardwre

* try zha

* Update homeassistant/setup.py

* await

* comments

* coverage

* coverage

* coverage

* move logic to loader

* move logic to loader

* preserve comments

tests/testing_config/custom_components/test_package_loaded_executor/__init__.py

@@ -0,0 +1,9 @@
+"""Provide a mock package component."""
+from .const import TEST  # noqa: F401
+
+DOMAIN = "test_package"
+
+
+async def async_setup(hass, config):
+    """Mock a successful setup."""
+    return True

tests/testing_config/custom_components/test_package_loaded_executor/config_flow.py

@@ -0,0 +1,7 @@
+"""Config flow."""
+
+from homeassistant.core import HomeAssistant
+
+
+async def _async_has_devices(hass: HomeAssistant) -> bool:
+    return True

tests/testing_config/custom_components/test_package_loaded_executor/const.py

@@ -0,0 +1,2 @@
+"""Constants for test_package custom component."""
+TEST = 5

tests/testing_config/custom_components/test_package_loaded_executor/icons.json

@@ -0,0 +1,15 @@
+{
+  "entity": {
+    "switch": {
+      "something": {
+        "state": {
+          "away": "mdi:home-outline",
+          "home": "mdi:home"
+        }
+      }
+    }
+  },
+  "services": {
+    "enable_god_mode": "mdi:shield"
+  }
+}

tests/testing_config/custom_components/test_package_loaded_executor/manifest.json

@@ -0,0 +1,11 @@
+{
+  "domain": "test_package_loaded_executor",
+  "name": "Test Package that loads in the executor",
+  "documentation": "http://test-package.io",
+  "requirements": [],
+  "dependencies": [],
+  "codeowners": [],
+  "config_flow": true,
+  "import_executor": true,
+  "version": "1.2.3"
+}