chore: adopt the NAPALM driver standard

- CI moves to .gitea/workflows/ci.yml and calls the shared driver workflow
  of NAPALM/driver-standard; napalm-device-types and napalm-linux come from
  git until napalm-linux 0.15.0 is on PyPI.
- requires-python >=3.10 (napalm-device-types needs it), SPDX license
  string, setuptools>=77, LICENSE file, py.typed, Issues and Changelog
  links.
- Dependencies: napalm-device-types>=4.22.0, napalm-linux>=0.15.0; the
  floors napalm>=4.0, netmiko>=4.0.0 and paramiko>=5.0.0 stay and pass
  the tests at exactly those versions. The dev extra gets floors and
  drops black (ruff formats).
- mypy strict for the whole package, no exempt module. install_package
  and uninstall_package keep napalm-device-types' PackagesMixin
  signatures, which LinuxDriver's differ from: type: ignore[override]
  on those two lines, with the reason above them.
- Coverage floor 76 % (measured 76.19 %); the quality baseline is empty
  apart from it.

tests/quality_baseline.json

@@ -0,0 +1,8 @@
+{
+ "coverage_floor": 76.0,
+ "function_complexity": {},
+ "function_lines": {},
+ "mypy_relaxed": [],
+ "python_file_lines": {},
+ "untyped_public": []
+}