chore: adopt the NAPALM driver standard

- The distribution is renamed to napalm-netgear-switches: napalm-netgear
  on PyPI belongs to another project. The import package napalm_netgear
  and the napalm.drivers entry points netgear_smart and netgear_plus stay;
  [tool.napalm-standard] package names the import package for the check.
  README install line and CHANGELOG say the new name.
- CI moves to .gitea/workflows/ci.yml and calls the shared driver workflow
  of NAPALM/driver-standard; .github/ is gone.
- requires-python >=3.10 (napalm-device-types needs it), floor
  napalm-device-types>=4.21.1, LICENSE file, py.typed, SPDX license string,
  links to git.netork.io, a dev extra with floors, CHANGELOG.md.
- mypy strict for the package; napalm_netgear.netgear_plus and
  napalm_netgear.netgear_smart are exempt for now (139 errors), recorded
  in the quality baseline with their long and complex functions and the
  2070-line netgear_smart module. Coverage floor 48 % (measured 48.23 %).

Closes #14

CHANGELOG.md

@@ -0,0 +1,20 @@
+# 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 package is now called `napalm-netgear-switches`** on PyPI
+  (`pip install napalm-netgear-switches`): the name `napalm-netgear` belongs to another
+  project. The import package `napalm_netgear` and the driver names `netgear_smart` and
+  `netgear_plus` stay the same.
+- 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`
+  and a LICENSE file. **Python 3.8 and 3.9 are no longer supported**; napalm-device-types
+  never ran on them. It needs napalm-device-types 4.21.1 or later.
+- A failed logout when a Netgear Plus session is closed is now logged at debug level.