Support editing task priorities

[jch-13]

Adds support for the modification of task priorities in a queue via pueue edit --priority/-o and pueue restart --edit-priority/-o (fixes #449). Despite the interesting discussion in #449 about how to improve task editing in general, this takes the easy way out and tries to integrate with the existing editing system by using (multiple) editor instances for now.

Checklist

• I picked the correct source and target branch.
• I included a new entry to the CHANGELOG.md.
• I checked cargo clippy and cargo fmt. The CI will fail otherwise anyway.
• (If applicable) I added tests for this feature or adjusted existing tests.
• (If applicable) I checked if anything in the wiki needs to be changed.

[Nukesor]

Thanks for the PR :)

It looks pretty clean, two minor nitpicks. I kind of let the feature stall since I wanted to fix this in a proper way, but I guess you're right. This is an good intermediate solution until there's a conclusion on how to move forward.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (fb6caab) 79.61% compared to head (42af45a) 79.67%.

Files	Patch %	Lines
pueue/src/client/cli.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           development     #490      +/-   ##
===============================================
+ Coverage        79.61%   79.67%   +0.05%     
===============================================
  Files               77       77              
  Lines             5538     5564      +26     
===============================================
+ Hits              4409     4433      +24     
- Misses            1129     1131       +2     

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[github-actions]

Test Results

  2 files  ±0   14 suites  ±0   1m 23s ⏱️ +7s
146 tests +2  146 ✅ +2  0 💤 ±0  0 ❌ ±0 
167 runs  +2  167 ✅ +2  0 💤 ±0  0 ❌ ±0 

Results for commit 42af45a. ± Comparison against base commit fb6caab.

♻️ This comment has been updated with latest results.

[jch-13]

Thank you! :)

[Nukesor]

Thanks :)