[FL-2230] SubGhz: protocol API refactoring (#969)

* SubGhz: protocols library refactoring
* SubGhz: new architecture and refactoring
* SubGhz: simplify protocol structure, remove unused types
* SubGhz: rename Subghz to SubGhz
* SubGhz: add environment concept

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
Co-authored-by: DrZlo13 <who.just.the.doctor@gmail.com>

scripts/flipper/app.py

@@ -16,8 +16,6 @@ class App:
 
     def __call__(self):
         self.args, _ = self.parser.parse_known_args()
-        if "func" not in self.args:
-            self.parser.error("Choose something to do")
         # configure log output
         self.log_level = logging.DEBUG if self.args.debug else logging.INFO
         self.logger.setLevel(self.log_level)
@@ -29,7 +27,7 @@ class App:
 
         # execute requested function
         self.before()
-        return_code = self.args.func()
+        return_code = self.call()
         self.after()
         if isinstance(return_code, int):
             exit(return_code)
@@ -37,6 +35,11 @@ class App:
             self.logger.error(f"Missing return code")
             exit(255)
 
+    def call(self):
+        if "func" not in self.args:
+            self.parser.error("Choose something to do")
+        return self.args.func()
+
     def init(self):
         raise Exception("init() is not implemented")