feat(devices): add support for Webber AP9750 air purifier

DEVICES.md

@@ -487,6 +487,7 @@
 - Vephos True air purifier
 - Vestfrost VP-A1Z40HW air purifier
 - Vork VK6067AW air purifier
+- Webber AP9750 air purifier
 
 ### Dehumidifiers
 

custom_components/tuya_local/devices/webber_ap9750_airpurifier.yaml

@@ -0,0 +1,132 @@
+name: Air purifier
+products:
+  - id: me73ary4ppn8bt5b
+    manufacturer: Webber
+    model: AP9750
+entities:
+  - entity: fan
+    translation_key: air_purifier
+    dps:
+      - id: 1
+        type: boolean
+        name: switch
+      - id: 4
+        type: string
+        name: speed
+        mapping:
+          - dps_val: low
+            value: 25
+          - dps_val: mid
+            value: 50
+          - dps_val: high
+            value: 75
+          - dps_val: max
+            value: 100
+      - id: 3
+        type: string
+        name: preset_mode
+        mapping:
+          - dps_val: normal
+            value: manual
+          - dps_val: ai_clean
+            value: auto
+          - dps_val: sleep
+            value: sleep
+  - entity: sensor
+    translation_key: filter_life
+    dps:
+      - id: 5
+        type: integer
+        name: sensor
+        unit: "%"
+  - entity: switch
+    translation_key: uv_sterilization
+    category: config
+    dps:
+      - id: 9
+        type: boolean
+        name: switch
+  - entity: humidifier
+    class: humidifier
+    dps:
+      - id: 10
+        type: boolean
+        name: switch
+      - id: 1
+        type: boolean
+        name: available
+      - id: 13
+        type: integer
+        name: current_humidity
+      - id: 101
+        type: integer
+        optional: true
+        name: humidity
+        range:
+          min: 31
+          max: 80
+  - entity: humidifier
+    class: dehumidifier
+    dps:
+      - id: 104
+        type: boolean
+        name: switch
+      - id: 1
+        type: boolean
+        name: available
+      - id: 13
+        type: integer
+        name: current_humidity
+      - id: 101
+        type: integer
+        optional: true
+        name: humidity
+        range:
+          min: 31
+          max: 80
+  - entity: sensor
+    translation_key: air_quality
+    class: enum
+    dps:
+      - id: 21
+        type: string
+        name: sensor
+        mapping:
+          - dps_val: No_data
+            value: null
+          - dps_val: Good
+            value: good
+          - dps_val: Normal
+            value: moderate
+          - dps_val: Bad
+            value: poor
+  - entity: number
+    translation_key: timer
+    category: config
+    dps:
+      - id: 102
+        type: integer
+        name: value
+        unit: h
+        range:
+          min: 0
+          max: 24
+  - entity: light
+    translation_key: display
+    category: config
+    dps:
+      - id: 103
+        type: boolean
+        name: switch
+        mapping:
+          - dps_val: true
+            value: false
+          - dps_val: false
+            value: true
+  - entity: binary_sensor
+    name: Humidity control
+    class: running
+    dps:
+      - id: 105
+        type: boolean
+        name: switch