[FL-3346] fbt: added Flipper selection when multiple are connected over USB (#2723)

* fbt: added Flipper selection when multiple are connected over USB
* scripts: serial_cli: added --port (-p) option

scripts/serial_cli.py

@@ -1,3 +1,4 @@
+import argparse
 import logging
 import os
 import subprocess
@@ -8,7 +9,10 @@ from flipper.utils.cdc import resolve_port
 
 def main():
     logger = logging.getLogger()
-    if not (port := resolve_port(logger, "auto")):
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-p", "--port", help="CDC Port", default="auto")
+    args = parser.parse_args()
+    if not (port := resolve_port(logger, args.port)):
         logger.error("Is Flipper connected via USB and not in DFU mode?")
         return 1
     subprocess.call(