Fix configuration loader and test stages

[codecov-commenter]

Codecov Report

Base: 16.20% // Head: 19.51% // Increases project coverage by +3.30% :tada:

Coverage data is based on head (824eaee) compared to base (28ad958). Patch coverage: 8.57% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #40 +/- ## ========================================== + Coverage 16.20% 19.51% +3.30% ========================================== Files 22 22 Lines 1931 1942 +11 ========================================== + Hits 313 379 +66 + Misses 1605 1530 -75 - Partials 13 33 +20 ``` | [Impacted Files](https://codecov.io/gh/cashubtc/cashu-feni/pull/40?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cashubtc) | Coverage Δ | | |---|---|---| | [cmd/cashu/feni/balance.go](https://codecov.io/gh/cashubtc/cashu-feni/pull/40?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cashubtc#diff-Y21kL2Nhc2h1L2ZlbmkvYmFsYW5jZS5nbw==) | `20.00% <0.00%> (ø)` | | | [cmd/cashu/feni/send.go](https://codecov.io/gh/cashubtc/cashu-feni/pull/40?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cashubtc#diff-Y21kL2Nhc2h1L2Zlbmkvc2VuZC5nbw==) | `2.45% <0.00%> (+0.02%)` | :arrow_up: | | [cmd/cashu/feni/wallet.go](https://codecov.io/gh/cashubtc/cashu-feni/pull/40?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cashubtc#diff-Y21kL2Nhc2h1L2Zlbmkvd2FsbGV0Lmdv) | `3.75% <0.00%> (-0.15%)` | :arrow_down: | | [cmd/cashu/feni/config.go](https://codecov.io/gh/cashubtc/cashu-feni/pull/40?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cashubtc#diff-Y21kL2Nhc2h1L2ZlbmkvY29uZmlnLmdv) | `51.16% <37.50%> (+37.10%)` | :arrow_up: | | [cmd/cashu/feni/client.go](https://codecov.io/gh/cashubtc/cashu-feni/pull/40?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cashubtc#diff-Y21kL2Nhc2h1L2ZlbmkvY2xpZW50Lmdv) | `14.87% <0.00%> (+14.87%)` | :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=cashubtc). 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=cashubtc)

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