Add logging and tests for `chdir`

[abhaasgoyal]

Resolves #161

Merge Message

• Add DEBUG log message when changing current working directory.
• Add unit test for chdir functionality, where it only changes directory within context.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 63.72%. Comparing base (ce3608e) to head (5c9c7f6). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #260 +/- ## ========================================== + Coverage 63.50% 63.72% +0.21% ========================================== Files 35 35 Lines 2521 2536 +15 ========================================== + Hits 1601 1616 +15 Misses 920 920 ```

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