fbt: updater over USB (#1344)

* Scripts: added update package uploader over USB; fbt: added flash_usb target
* fbt: additional dependencies for flash_usb
* Cli: fix cursor_position corruption

Co-authored-by: あく <alleteam@gmail.com>

scripts/flipper/storage.py

@@ -53,11 +53,11 @@ class FlipperStorage:
     CLI_PROMPT = ">: "
     CLI_EOL = "\r\n"
 
-    def __init__(self, portname: str):
+    def __init__(self, portname: str, portbaud: int = 115200):
         self.port = serial.Serial()
         self.port.port = portname
         self.port.timeout = 2
-        self.port.baudrate = 115200
+        self.port.baudrate = portbaud
         self.read = BufferedRead(self.port)
         self.last_error = ""