feat: standards, shared CI and release tooling for NAPALM drivers

STANDARDS.md binds every repository in the NAPALM org: one default branch,
Conventional Commits, the device-types contract, test-driven development,
clean-code limits, a quality ratchet for existing code, packaging rules and
releases by tag to PyPI.

napalm-standard holds what a tool can check: the conformance check (with
release rules on a tag), the quality ratchet (ported from netOrk's
quality_ratchet.py), and the Gitea release from the CHANGELOG section.
.gitea/workflows/driver.yml is the CI every driver calls; template/ is a new
driver's starting point and passes the check as it is.

template/README.md

@@ -0,0 +1,45 @@
+# napalm-example
+
+NAPALM driver for Example switches, built on
+[napalm-device-types](https://git.netork.io/NAPALM/napalm-device-types) (`SwitchDriver`).
+
+## Tested against
+
+| Model | Firmware |
+|---|---|
+| Example 24 | 1.0.0 |
+
+## Connection
+
+SSH on port 22. The account needs read access to `show version`.
+
+```python
+from napalm import get_network_driver
+
+driver = get_network_driver("example")
+with driver("192.0.2.10", "admin", "secret") as device:
+    print(device.get_facts())
+```
+
+## Supported
+
+| Getter / action | |
+|---|---|
+| `get_facts` | yes |
+
+## Not supported
+
+Configuration changes.
+
+## Development
+
+The rules are in [STANDARDS.md](https://git.netork.io/NAPALM/driver-standard/src/branch/main/STANDARDS.md).
+
+```bash
+python -m venv .venv && .venv/bin/pip install -e ".[dev]"
+.venv/bin/pytest --cov
+```
+
+## License
+
+Apache-2.0