refactor!: drop run_device_action; the media controls are methods (0.2.0)

run_device_action dispatched play, pause, stop, next/previous track,
set_volume:N and toggle_mute by string and returned
{success, action, message} instead of the DeviceActionResultDict its
contract names. The typed methods it called (play(), set_volume(), ...)
are the interface; napalm-device-types deprecates run_device_action.

BREAKING CHANGE: run_device_action is removed.

Closes #3

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "napalm-sonos"
-version = "0.1.0"
+version = "0.2.0"
 description = "NAPALM driver for Sonos speakers (SoCo)."
 readme = "README.md"
 license = { text = "Apache-2.0" }