Added list_timestamps

[claezon]

Description

Added function to retrieve timestamps from vibium-cloud endpoint /sources/{source_id}/timestamps. References vikinganalytics/vibium-cloud#690

New dependencies: (Added to requirements_*.txt)

Fixes # (potential issues that are fixed by this PR)

Type of Change

• [ ] Bug fix (non-breaking change which fixes an issue -> bump patch)
• [x] New feature (non-breaking change which adds functionality -> bump minor version)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected -> bump major version)
• [ ] Documentation Update
• [ ] CI/CD workflows Update

Checklist

• [x] I have added tests that prove that my fix/feature works
• [x] Linters pass locally and I have followed PEP8 code style
• [x] New and existing tests pass locally
• [ ] I have updated the documentation if needed
• [ ] I have commented hard-to-understand areas in the code

Requirements

• [ ] I have updated the MVG version

[codecov[bot]]

Codecov Report

Base: 72.14% // Head: 72.81% // Increases project coverage by +0.67% :tada:

Coverage data is based on head (581873f) compared to base (5ee949b). Patch coverage: 90.90% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #192 +/- ## ========================================== + Coverage 72.14% 72.81% +0.67% ========================================== Files 11 12 +1 Lines 858 883 +25 ========================================== + Hits 619 643 +24 - Misses 239 240 +1 ``` | [Impacted Files](https://codecov.io/gh/vikinganalytics/mvg/pull/192?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=vikinganalytics) | Coverage Δ | | |---|---|---| | [mvg/utils/response\_processing.py](https://codecov.io/gh/vikinganalytics/mvg/pull/192?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=vikinganalytics#diff-bXZnL3V0aWxzL3Jlc3BvbnNlX3Byb2Nlc3NpbmcucHk=) | `82.60% <82.60%> (ø)` | | | [mvg/mvg.py](https://codecov.io/gh/vikinganalytics/mvg/pull/192?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=vikinganalytics#diff-bXZnL212Zy5weQ==) | `89.42% <100.00%> (+1.03%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=vikinganalytics). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=vikinganalytics)

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