Move the Clippy action to the Rust workflow

[matiaskorhonen]

Unify the two non-release workflows

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (caee4c5) 95.71% compared to head (928134a) 95.71%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #85 +/- ## ======================================= Coverage 95.71% 95.71% ======================================= Files 7 7 Lines 677 677 ======================================= Hits 648 648 Misses 29 29 ```

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[github-actions[bot]]

PaperAge visual snapshots

Compare the output of the latest release version of PaperAge with the results from the current commit.

	Latest release	Current commit	Diff
A4
Letter

Encryption passphrase: supersecret

Note: Snapshots are deleted after 30 days.