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 %).

.gitea/workflows/ci.yml

@@ -0,0 +1,17 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+    tags: ["v*"]
+  pull_request:
+
+jobs:
+  driver:
+    uses: NAPALM/driver-standard/.gitea/workflows/driver.yml@main
+    with:
+      standard-ref: main
+      # Until napalm-device-types is on PyPI.
+      pre-install: "git+https://git.netork.io/NAPALM/napalm-device-types.git"
+    secrets:
+      PYPI_TOKEN: ${{ secrets.PYPI_TOKEN }}