Added basic plugin class definitions

sbapp/sideband/plugins.py

@@ -0,0 +1,41 @@
+class SidebandPlugin():
+    pass
+
+class SidebandCommandPlugin(SidebandPlugin):
+    def __init__(self, sideband_core):
+        self.__sideband = sideband_core
+        self.__started = False
+        self.command_name = type(self).command_name
+
+    def start(self):
+        self.__started = True
+
+    def stop(self):
+        self.__started = False
+
+    def is_running(self):
+        return self.__started == True
+
+    def get_sideband(self):
+        return self.__sideband
+
+    def handle_command(self, arguments):
+        raise NotImplementedError
+
+class SidebandServicePlugin(SidebandPlugin):
+    def __init__(self, sideband_core):
+        self.__sideband = sideband_core
+        self.__started = False
+        self.service_name = type(self).service_name
+
+    def start(self):
+        self.__started = True
+
+    def stop(self):
+        self.__started = False
+
+    def is_running(self):
+        return self.__started == True
+
+    def get_sideband(self):
+        return self.__sideband