Add UpdateTestSnapshotFiles() Context Manager

[codecov[bot]]

Codecov Report

Patch coverage: 90.00% and project coverage change: +0.69% :tada:

Comparison is base (6dfcc2f) 74.47% compared to head (076c1d2) 75.16%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #10 +/- ## ========================================== + Coverage 74.47% 75.16% +0.69% ========================================== Files 45 46 +1 Lines 1653 1671 +18 Branches 253 259 +6 ========================================== + Hits 1231 1256 +25 + Misses 422 415 -7 ``` | [Files Changed](https://app.codecov.io/gh/jedie/cli-base-utilities/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jens+Diemer) | Coverage Δ | | |---|---|---| | [cli\_base/cli/dev.py](https://app.codecov.io/gh/jedie/cli-base-utilities/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jens+Diemer#diff-Y2xpX2Jhc2UvY2xpL2Rldi5weQ==) | `66.36% <60.00%> (+5.15%)` | :arrow_up: | | [cli\_base/cli\_tools/test\_utils/snapshot.py](https://app.codecov.io/gh/jedie/cli-base-utilities/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jens+Diemer#diff-Y2xpX2Jhc2UvY2xpX3Rvb2xzL3Rlc3RfdXRpbHMvc25hcHNob3QucHk=) | `95.83% <95.83%> (ø)` | | | [cli\_base/\_\_init\_\_.py](https://app.codecov.io/gh/jedie/cli-base-utilities/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jens+Diemer#diff-Y2xpX2Jhc2UvX19pbml0X18ucHk=) | `100.00% <100.00%> (ø)` | |

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