[DPE-5778] add docs (#11) #9

Job	Run time
Build charm / Collect bases for charm \| .	27s
Tests / Unit test charm	26s
Tests / Check libraries	28s
Tests / Lint / Lint .github/workflows/	3s
Tests / Build charm / Collect bases for charm \| .	13s
Tests / Lint / tox run -e lint	20s
Tests / Build charm / Build charm \| base #0	3m 3s
Build charm / Build charm \| base #0	9m 15s
Tests / Integration test charm \| 3.6/beta / ${{ inputs.juju-agent-version \|\| inputs.juju-snap-channel }} \| ${{ inputs.architecture }} \| Collect integration test groups	0s
Tests / Integration test charm \| 3.5.4 / 3.5.4 \| amd64 \| Collect integration test groups	23s
Tests / Integration test charm \| 3.6/beta / ${{ matrix.groups.job_name }}	0s
Tests / Integration test charm \| 3.6/beta / (beta) Publish Allure report	0s
Tests / Integration test charm \| 3.5.4 / test_charm.py \| group 1	16m 16s
Tests / Integration test charm \| 3.5.4 / (beta) Publish Allure report	0s
Release libraries	3s
Release charm / Release charm	1m 6s
	32m 3s

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