added snapcraft and bin folder

bin/maigret

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+import asyncio
+import sys
+
+from maigret.maigret import main
+
+
+def run():
+    try:
+        loop = asyncio.get_event_loop()
+        loop.run_until_complete(main())
+    except KeyboardInterrupt:
+        print('Maigret is interrupted.')
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    run()