Implemented PSETEX command

[codecov[bot]]

Codecov Report

Base: 80.31% // Head: 80.33% // Increases project coverage by +0.02% :tada:

Coverage data is based on head (24fe1bc) compared to base (46ec103). Patch coverage: 89.47% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #207 +/- ## ========================================== + Coverage 80.31% 80.33% +0.02% ========================================== Files 132 133 +1 Lines 7993 8012 +19 ========================================== + Hits 6419 6436 +17 - Misses 1574 1576 +2 ``` | [Impacted Files](https://codecov.io/gh/danielealbano/cachegrand/pull/207?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Daniele+Salvatore+Albano) | Coverage Δ | | |---|---|---| | [...module/redis/command/module\_redis\_command\_psetex.c](https://codecov.io/gh/danielealbano/cachegrand/pull/207/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Daniele+Salvatore+Albano#diff-c3JjL21vZHVsZS9yZWRpcy9jb21tYW5kL21vZHVsZV9yZWRpc19jb21tYW5kX3BzZXRleC5j) | `89.47% <89.47%> (ø)` | | 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=Daniele+Salvatore+Albano). 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=Daniele+Salvatore+Albano)

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