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 comes from git until it is
  on PyPI.
- requires-python >=3.10 (napalm-device-types needs it), LICENSE file,
  py.typed, SPDX license string, links to git.netork.io.
- mypy strict for the package; napalm_linux.linux is exempt for now (21
  errors), recorded in the quality baseline with its long functions and
  the 2200-line module. Coverage floor 58 % (measured 58.23 %).

README.md

@@ -24,7 +24,7 @@ pip install napalm napalm-linux
 Or from source:
 
 ```bash
-git clone https://github.com/chrismanivong/napalm-linux
+git clone https://git.netork.io/NAPALM/napalm-linux
 pip install -e napalm-linux/
 ```