Add documentation for debuging user system locally

[codecov-commenter]

Codecov Report

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

Comparison is base (dfca9c4) 52.98% compared to head (71ddd9e) 53.14%. Report is 51 commits behind head on dev.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #2541 +/- ## ========================================== + Coverage 52.98% 53.14% +0.16% ========================================== Files 117 117 Lines 9645 9666 +21 ========================================== + Hits 5110 5137 +27 + Misses 4535 4529 -6 ``` | [Flag](https://app.codecov.io/gh/data-for-change/anyway/pull/2541/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/data-for-change/anyway/pull/2541/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | `53.14% <ø> (+0.16%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#carryforward-flags-in-the-pull-request-comment) to find out more.

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