Add SHELLY PLUS 1 board with support of relay, switch, BT gateway (#1349)

So that you know, the overtemperature protection is not implemented in the firmware.

scripts/gen_wu_dev.py

@@ -107,7 +107,7 @@ with open(manif_path + filename,'wb') as output_file:
     output_file.write(boot_bin.content)
 
 for name in os.listdir(bin_path):
-    if 'firmware.bin' in name and ('esp32' in name or 'ttgo' in name or 'heltec' in name or 'thingpulse' in name or 'lilygo' in name):
+    if 'firmware.bin' in name and ('esp32' in name or 'ttgo' in name or 'heltec' in name or 'thingpulse' in name or 'lilygo' in name or 'shelly' in name):
         fw = name.split('-firmware')[0]
         man_file = fw + '.manifest.json'
         print('Bin name:' + name)