Adds encrypt/decrypt to CLI

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: +0.02 :tada:

Comparison is base (5737ac2) 73.31% compared to head (1a2a10e) 73.34%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #68 +/- ## ========================================== + Coverage 73.31% 73.34% +0.02% ========================================== Files 93 93 Lines 10916 10916 ========================================== + Hits 8003 8006 +3 + Misses 2913 2910 -3 ``` | [Impacted Files](https://codecov.io/gh/chanced/navajo/pull/68?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Chance) | Coverage Δ | | |---|---|---| | [navajo-cli/src/cli.rs](https://codecov.io/gh/chanced/navajo/pull/68?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Chance#diff-bmF2YWpvLWNsaS9zcmMvY2xpLnJz) | `83.75% <ø> (ø)` | | ... and [2 files with indirect coverage changes](https://codecov.io/gh/chanced/navajo/pull/68/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Chance) 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=Chance). 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=Chance)

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