Convert fjäråskupan to built in bluetooth (#75380)

* Add bluetooth discovery

* Use home assistant standard api

* Fixup manufacture data

* Adjust config flow to use standard features

* Fixup tests

* Mock bluetooth

* Simplify device check

* Fix missing typing

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

homeassistant/generated/bluetooth.py

@@ -7,6 +7,18 @@ from __future__ import annotations
 # fmt: off
 
 BLUETOOTH: list[dict[str, str | int | list[int]]] = [
+    {
+        "domain": "fjaraskupan",
+        "manufacturer_id": 20296,
+        "manufacturer_data_start": [
+            79,
+            68,
+            70,
+            74,
+            65,
+            82
+        ]
+    },
     {
         "domain": "govee_ble",
         "local_name": "Govee*"