chore: adopt the NAPALM driver standard

- CI moves to .gitea/workflows/ci.yml and calls the shared driver workflow
  of NAPALM/driver-standard; .github/ is gone.
- napalm-device-types >=4.21.1 is now declared: the driver imports
  MediaDriver, PortSpec and FingerprintRule from it, and CI used to
  install it by hand.
- requires-python >=3.10 (napalm-device-types needs it), LICENSE, README,
  CHANGELOG, py.typed, SPDX license string, setuptools>=77, version floors
  on the dev extra, links to git.netork.io; .gitignore as in the template.
- mypy strict for the package; napalm_sonos.sonos_driver is exempt for now
  (5 errors, two of them return types that differ from MediaDriver's),
  recorded in the quality baseline.
- Coverage floor 71 % (measured 71.30 %).

CHANGELOG.md

@@ -0,0 +1,31 @@
+# Changelog
+
+All notable changes to this driver. The format follows
+[Keep a Changelog](https://keepachangelog.com/), versions follow
+[Semantic Versioning](https://semver.org/).
+
+## [Unreleased]
+
+### Changed
+- The driver follows the NAPALM driver standard
+  (https://git.netork.io/NAPALM/driver-standard): CI on Gitea runs ruff, mypy, the
+  tests on Python 3.10–3.13 and at the lowest declared versions, bandit, pip-audit and
+  a build check, and a release tag publishes to PyPI. The package now ships `py.typed`,
+  a README and a LICENSE file. **Python 3.9 is no longer supported**; napalm-device-types
+  never ran on it.
+- napalm-device-types (4.21.1 or later, from PyPI) is now a declared dependency; the
+  driver always imported it.
+- A failure to read the speaker's device properties (wired or wireless) is now logged
+  at debug level.
+
+## [0.2.0] - 2026-10-17
+
+### Removed
+- **Breaking:** `run_device_action()`. The media controls it dispatched by string
+  (`play`, `pause`, `stop`, next/previous track, volume, mute) are the typed methods
+  `play()`, `set_volume()` and the others.
+
+## [0.1.0] - 2026-06-13
+
+### Added
+- `sonos` driver: facts, interfaces and media controls for Sonos speakers through SoCo.