Raise error when trying to resolve to display names with duplicates.

[daniel-k]

Follow-up from #32 (comment)

[github-actions]

Coverage results

Update on 2024-10-02 12:41:47.470786027 +0000

This is the coverage report for commit 85c30e8

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           44      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                                   4      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                                 117      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                                                                                 530      0   100%

4 empty files skipped.

[denizs]

We should at least warn about the fact that there are variables with duplicate display names.