Use a custom user agent when issuing HTTP requests.

[cipherself]

Description

This PR introduces adds a User-Agent header to HTTP requests made from the API clients, this will allow us to identify which requests originate from the SDK.

The User-Agent follows the format defined here.

This PR doesn't have GDPR implications as there's no personal data used and the user agent cannot be used to identify a specific user or clusters of users.

References

• https://www.rfc-editor.org/rfc/rfc9110.html#name-user-agent
• https://www.python-httpx.org/advanced/clients/#sharing-configuration-across-requests
• https://www.python-httpx.org/advanced/clients/#merging-of-configuration

[github-actions]

Coverage results

This is the coverage report for commit 0bba863

Name                                                                                Stmts   Miss  Cover   Missing
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.tox/py/lib/python3.12/site-packages/enlyze/__init__.py                                 4      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/base.py                        70      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/production_runs/client.py      20      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/production_runs/models.py      52      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/timeseries/client.py           19      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/timeseries/models.py           43      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/auth.py                                    13      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/client.py                                 108      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/constants.py                                8      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/errors.py                                   3      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/iterable_tools.py                           7      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/models.py                                 110      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/schema.py                                  26      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/validators.py                              38      0   100%
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TOTAL                                                                                 521      0   100%

4 empty files skipped.

[daniel-k]

Nice, that's a very good idea! What I especially like about this is that we'll be able to track the SDK versions that are used in the wild 👍