Add horizontal swing (DPS 106) to Teknopoint Idra Skiv (#5540)

* Add horizontal swing (DPS 106) to Teknopoint Idra Skiv air conditioner

DPS 106 controls the horizontal vane position on the Teknopoint IDRA /
EVO-09 indoor unit. Observed values: "off" (no horizontal swing) and
"same" (horizontal swing active).

The RA1A1 remote control has a dedicated Left&right swing button that
cycles through these positions. The EVO-09 catalogue confirms horizontal
swing support.

Tested on 4 units (EVO-09 with IDRA iSKV4-28C9) via tuya-local debug
logging: DPS 106 confirmed present in full_poll responses.

* Update air conditioner YAML configuration

- added swing horizontal mode instead of separate select for  horizontal position.
- make C the default temperature unit to ensure a unit is always defined

---------

Co-authored-by: Jason Rumney <make-all@users.noreply.github.com>

custom_components/tuya_local/devices/idra_skiv_airconditioner.yaml

@@ -96,10 +96,17 @@ entities:
         type: string
         optional: true
         mapping:
-          - dps_val: c
-            value: C
           - dps_val: f
             value: F
+          - value: C
+      - id: 106
+        type: string
+        name: swing_horizontal_mode
+        mapping:
+          - dps_val: "off"
+            value: "off"
+          - dps_val: "same"
+            value: "on"
   - entity: switch
     name: Auxiliary heat
     icon: "mdi:heating-coil"