Add support for 3-way poerstrip with power monitoring

Issue #3291

ACKNOWLEDGEMENTS.md

@@ -831,7 +831,7 @@ Further device support has been made with the assistance of users. Please consid
 - [yaro24](https://github.com/yaro24) for contributing support for Jiahong ET-44W thermostat.
 - [point2start](https://github.com/point2start) for assisting with support for Atorch AT4PTW thermostat.
 - [maLLoud86](https://github.com/maLLoud86) for assisting with support for iSparkle Curtain Micro Lights.
-- [josvink66](https://github.com/josvink66) for assisting with support for Easybaby GS-801 infant formula maker, Varin RGBCW ceiling fan.
+- [josvink66](https://github.com/josvink66) for assisting with support for Easybaby GS-801 infant formula maker, Varin RGBCW ceiling fan, 3-way power monitoring strip (LSC).
 - [Karlsons88](https://github.com/Karlsons88) for assisting with support for Nulite monobloc heat pump.
 - [Watanuki-kun](https://github.com/Watanuki-kun) for assisting with support for Smart Amari ceiling fan with light.
 - [aherbjornsen](https://github.com/aherbjornsen) for assisting with support for Arida Venti 160 ventilation fan.

DEVICES.md

@@ -604,6 +604,8 @@ different features enabled, so are known to work with multiple brands
 of device.
 
 - 2 outlet plus 2 USB smartplug with individual timers
+- 3 way power monitoring strip
+  _confirmed as working with LSC Smart Connect powerstrip_
 - 4 way power monitoring strip (2 types)
   _confirmed as working with Kogan KASPS10A3P3UA 3 socket + USB powerstrip_
 - 4 way powerstrip with USB

custom_components/tuya_local/devices/powerstrip_3outlet_powermonitor.yaml

@@ -0,0 +1,208 @@
+name: Three outlet powerstrip
+products:
+  - id: haay5f2zrjedat8z
+    manufacturer: LSC Smart Connect
+entities:
+  - entity: switch
+    translation_key: outlet_x
+    translation_placeholders:
+      x: "1"
+    class: outlet
+    dps:
+      - id: 1
+        type: boolean
+        name: switch
+      - id: 17
+        type: integer
+        name: add_ele
+        optional: true
+      - id: 21
+        type: bitfield
+        name: factory_test
+        optional: true
+      - id: 25
+        type: integer
+        name: ele_calibration
+        optional: true
+      - id: 44
+        type: string
+        optional: true
+        name: inching
+  - entity: switch
+    translation_key: outlet_x
+    translation_placeholders:
+      x: "2"
+    class: outlet
+    dps:
+      - id: 2
+        type: boolean
+        name: switch
+  - entity: switch
+    translation_key: outlet_x
+    translation_placeholders:
+      x: "3"
+    class: outlet
+    dps:
+      - id: 3
+        type: boolean
+        name: switch
+  - entity: time
+    category: config
+    translation_key: timer_x
+    translation_placeholders:
+      x: "1"
+    dps:
+      - id: 9
+        type: integer
+        name: second
+        range:
+          min: 0
+          max: 86400
+      - id: 42
+        type: string
+        name: schedule
+        optional: true
+      - id: 43
+        type: string
+        optional: true
+        name: random_schedule
+  - entity: time
+    category: config
+    translation_key: timer_x
+    translation_placeholders:
+      x: "2"
+    dps:
+      - id: 10
+        type: integer
+        name: second
+        range:
+          min: 0
+          max: 86400
+  - entity: time
+    category: config
+    translation_key: timer_x
+    translation_placeholders:
+      x: "3"
+    dps:
+      - id: 11
+        type: integer
+        name: second
+        range:
+          min: 0
+          max: 86400
+  - entity: sensor
+    class: current
+    category: diagnostic
+    dps:
+      - id: 18
+        type: integer
+        name: sensor
+        unit: mA
+        class: measurement
+      - id: 23
+        type: integer
+        name: calibration
+        optional: true
+  - entity: sensor
+    class: power
+    category: diagnostic
+    dps:
+      - id: 19
+        type: integer
+        name: sensor
+        unit: W
+        class: measurement
+        mapping:
+          - scale: 10
+      - id: 24
+        type: integer
+        name: calibration
+        optional: true
+  - entity: sensor
+    class: voltage
+    category: diagnostic
+    dps:
+      - id: 20
+        type: integer
+        name: sensor
+        unit: V
+        class: measurement
+        mapping:
+          - scale: 10
+      - id: 22
+        type: integer
+        name: calibration
+        optional: true
+  - entity: binary_sensor
+    class: problem
+    category: diagnostic
+    dps:
+      - id: 26
+        type: bitfield
+        name: sensor
+        optional: true
+        persist: false
+        mapping:
+          - dps_val: null
+            value: false
+          - dps_val: 0
+            value: false
+          - value: true
+      - id: 26
+        type: bitfield
+        name: fault_code
+        optional: true
+  - entity: select
+    translation_key: initial_state
+    category: config
+    dps:
+      - id: 38
+        type: string
+        name: option
+        optional: true
+        mapping:
+          - dps_val: "on"
+            value: "on"
+          - dps_val: "off"
+            value: "off"
+          - dps_val: memory
+            value: memory
+          - dps_val: null
+            invalid: true
+  - entity: select
+    translation_key: light_mode
+    category: config
+    hidden: unavailable
+    dps:
+      - id: 40
+        type: string
+        optional: true
+        name: available
+        mapping:
+          - dps_val: null
+            value: false
+          - value: true
+      - id: 40
+        type: string
+        optional: true
+        name: option
+        mapping:
+          - dps_val: relay
+            value: state
+          - dps_val: pos
+            value: locator
+          - dps_val: none
+            value: "off"
+          - dps_val: "on"
+            value: "on"
+  - entity: lock
+    translation_key: child_lock
+    category: config
+    dps:
+      - id: 41
+        type: boolean
+        name: lock
+        optional: true
+        mapping:
+          - dps_val: null
+            invalid: true