feat: add SenseCAP Solar USB serial bridge target

variants/sensecap_solar/platformio.ini

@@ -51,6 +51,22 @@ build_flags =
 build_src_filter = ${SenseCap_Solar.build_src_filter}
   +<../examples/simple_repeater/*.cpp>
 
+[env:SenseCap_Solar_repeater_bridge_usbserial]
+extends = SenseCap_Solar
+build_flags =
+  ${SenseCap_Solar.build_flags}
+  -D ADVERT_NAME='"SenseCap Solar USB Bridge"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
+  -D WITH_RS232_BRIDGE=bridgeSerial
+  -D WITH_USB_SERIAL_BRIDGE
+  -D CFG_TUD_CDC=2
+build_src_filter = ${SenseCap_Solar.build_src_filter}
+  +<helpers/bridges/RS232Bridge.cpp>
+  +<../examples/simple_repeater/*.cpp>
+
 [env:SenseCap_Solar_room_server]
 extends = SenseCap_Solar
 build_flags =