Support for AM43 BLE blind motors (#1744)

Co-authored-by: Ben Buxton <bb@cactii.net>
Co-authored-by: Otto Winter <otto@otto-winter.com>
Co-authored-by: Stefan Agner <stefan@agner.ch>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Co-authored-by: René Klomp <rene@klomp.ws>
Co-authored-by: Oxan van Leeuwen <oxan@oxanvanleeuwen.nl>
Co-authored-by: Geoff Davis <geoff@geoffdavis.com>
Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>
Co-authored-by: dentra <dentra@users.noreply.github.com>
Co-authored-by: Guillermo Ruffino <glm.net@gmail.com>
Co-authored-by: Franck Nijhof <frenck@frenck.nl>
Co-authored-by: Barry Loong <loongyh@users.noreply.github.com>
Co-authored-by: Sergey V. DUDANOV <sergey.dudanov@gmail.com>
Co-authored-by: Balazs Scheidler <bazsi77@gmail.com>

tests/test1.yaml

@@ -2145,6 +2145,10 @@ cover:
           id: template_cover
           state: CLOSED
     assumed_state: no
+  - platform: am43
+    name: 'Test AM43'
+    id: am43_test
+    ble_client_id: ble_foo
 
 debug: