[WIP] Flipper Devtool (#113)

* FLPv0.1 on Python; File transfer is working.
* FLPv0.1 on Python; .gitignore fixes.
* Update protocol to latest version; change interface to OOP

Co-authored-by: Daniel Solmann <DanGSun@yandex.ru>
Co-authored-by: coreglitch <mail@s3f.ru>

flp/flp.py

@@ -0,0 +1,39 @@
+import flipper
+import serial
+import click
+
+DEFAULT_TTY = "/dev/ttyUSB0"
+
+
+@click.group()
+def cli():
+    pass
+
+
+@cli.group()
+def fs():
+    pass
+
+
+@fs.command()
+@click.argument("file_in", type=click.Path(exists=True))
+@click.argument("file_out")
+@click.option("--port", default=DEFAULT_TTY)
+def push(file_in, file_out, port):
+    with serial.Serial(port, 115200, timeout=10) as p:
+        flipper.file.push(p, file_in, file_out)
+    print("OK.")
+
+
+@fs.command()
+@click.argument("file_in")
+@click.argument("file_out", type=click.Path())
+@click.option("--port", default=DEFAULT_TTY)
+def pull(file_in, file_out, port):
+    with serial.Serial(port, 115200, timeout=10) as p:
+        flipper.file.pull(p, file_in, file_out)
+    print("OK.")
+
+
+if __name__ == "__main__":
+    cli()