feat: add "projects project-list" command

[codecov[bot]]

Codecov Report

Attention: 33 lines in your changes are missing coverage. Please review.

Comparison is base (b2286d1) 54.06% compared to head (174cd91) 54.88%.

:exclamation: Current head 174cd91 differs from pull request most recent head 3d7519d. Consider uploading reports for the commit 3d7519d to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #50 +/- ## ========================================== + Coverage 54.06% 54.88% +0.81% ========================================== Files 31 35 +4 Lines 2212 2325 +113 ========================================== + Hits 1196 1276 +80 - Misses 1016 1049 +33 ``` | [Files](https://app.codecov.io/gh/bihealth/varfish-cli/pull/50?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth) | Coverage Δ | | |---|---|---| | [varfish\_cli/\_\_main\_\_.py](https://app.codecov.io/gh/bihealth/varfish-cli/pull/50?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth#diff-dmFyZmlzaF9jbGkvX19tYWluX18ucHk=) | `100.00% <100.00%> (ø)` | | | [varfish\_cli/api/\_\_init\_\_.py](https://app.codecov.io/gh/bihealth/varfish-cli/pull/50?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth#diff-dmFyZmlzaF9jbGkvYXBpL19faW5pdF9fLnB5) | `100.00% <100.00%> (ø)` | | | [varfish\_cli/api/models.py](https://app.codecov.io/gh/bihealth/varfish-cli/pull/50?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth#diff-dmFyZmlzaF9jbGkvYXBpL21vZGVscy5weQ==) | `96.91% <100.00%> (+0.10%)` | :arrow_up: | | [varfish\_cli/projects/\_\_init\_\_.py](https://app.codecov.io/gh/bihealth/varfish-cli/pull/50?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth#diff-dmFyZmlzaF9jbGkvcHJvamVjdHMvX19pbml0X18ucHk=) | `82.75% <82.75%> (ø)` | | | [varfish\_cli/projects/config.py](https://app.codecov.io/gh/bihealth/varfish-cli/pull/50?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth#diff-dmFyZmlzaF9jbGkvcHJvamVjdHMvY29uZmlnLnB5) | `77.27% <77.27%> (ø)` | | | [varfish\_cli/api/project.py](https://app.codecov.io/gh/bihealth/varfish-cli/pull/50?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth#diff-dmFyZmlzaF9jbGkvYXBpL3Byb2plY3QucHk=) | `56.25% <56.25%> (ø)` | | | [varfish\_cli/projects/project\_list.py](https://app.codecov.io/gh/bihealth/varfish-cli/pull/50?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth#diff-dmFyZmlzaF9jbGkvcHJvamVjdHMvcHJvamVjdF9saXN0LnB5) | `42.85% <42.85%> (ø)` | |

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