[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/Pipfile

@@ -0,0 +1,14 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+black = "20.8b1"
+
+[packages]
+pyserial = "3.4"
+click = "7.1.2"
+
+[requires]
+python_version = "3.8"