🎉🗃️ Add BSEED Echo Click 3-gang L-only 🅱 (#423)

SWITCH_BSEED_TS0726_L_3GANG_2
`_TZ3000_r2fgo9ks`

Author: dexxter00

device_db.yaml

@@ -4452,7 +4452,7 @@ SWITCH_BSEED_TS0726_L_3GANG:
   tuya_module: ZT3L
   mcu_family: Telink
   mcu: TLSR8258
-  config_str: vsom92pp;TS0726-3-BS;LC3;SB5u;RC1;ID2;M;  null
+  config_str: vsom92pp;TS0726-3-BS1;LC3;SB5u;RC1;ID2;M;  null
   alt_config_str: null
   old_manufacturer_names: null
   old_zb_models: null
@@ -4467,6 +4467,33 @@ SWITCH_BSEED_TS0726_L_3GANG:
   - https://www.aliexpress.com/item/1005010747186290.html
   - https://www.aliexpress.com/item/1005010805195317.html
   - https://www.bseed.com/products/click-series-diy-part-customized-free-combinations-smart-zigbee-switch-socket-insert-white-color-crystal-glass-panel-copy?variant=47882814292123
+SWITCH_BSEED_TS0726_L_3GANG_2:
+  human_name: BSEED Echo Click 3-gang L-only 🅱
+  category: switch
+  power: mains
+  neutral: optional
+  output: relay
+  device_type: end_device
+  stock_model_name: TS0726
+  stock_manufacturer_name: _TZ3000_r2fgo9ks
+  stock_converter_manufacturer: Tuya
+  stock_converter_model: TS0726_3_gang_scene_switch
+  override_z2m_device: EC-SL-FK86ZPCS31
+  tuya_module: ZTU
+  mcu_family: Telink
+  mcu: TLSR8258
+  config_str: r2fgo9ks;TS0726-3-BS;LD4;SA1u;RB4;IC1;SC2u;RD2;IB5;SA0u;RC3;IB6;M;
+  alt_config_str: null
+  old_manufacturer_names: null
+  old_zb_models: null
+  stock_manufacturer_id: 4417
+  stock_image_type: 54179
+  firmware_image_type: 47007
+  build: yes
+  status: fully_supported
+  info: Supported
+  threads: https://github.com/romasku/tuya-zigbee-switch/pull/423
+  store: null
 SWITCH_BSEED_TS0726_L_4GANG:
   human_name: BSEED Echo Click 4-gang L-only
   category: switch