Add Deako integration (#121132)

* Deako integration using pydeako

* fix: address feedback

- make unit tests more e2e
- use runtime_data to store connection

* fix: address feedback part 2

- added better type safety for Deako config entries
- refactored the config flow tests to use a conftest mock instead of directly patching
- removed pytest.mark.asyncio test decorators

* fix: address feedback pt 3

- simplify config entry type
- add test for single_instance_allowed
- remove light.py get_state(), only used once, no need to be separate function

* fix: ruff format

* Update homeassistant/components/deako/__init__.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

---------

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

homeassistant/generated/zeroconf.py

@@ -423,6 +423,11 @@ ZEROCONF = {
             "domain": "forked_daapd",
         },
     ],
+    "_deako._tcp.local.": [
+        {
+            "domain": "deako",
+        },
+    ],
     "_devialet-http._tcp.local.": [
         {
             "domain": "devialet",