todo list: Add clean option

[prarit]

I use my Todo list to keep track of important work and find myself being lazy about keeping my Todo list clean. I often end up with a large number of closed or merged MRs on my Todo list, and it would be useful to have an lab option to remove these Todos from my Todo list.

Add a clean option, "lab todo list --clean" that removes Todos for closed or merged MRs.

Signed-off-by: Prarit Bhargava prarit@redhat.com

[prarit]

@zampierilucas @bmeneg , I could make this "lab todo clean" instead of "lab todo list --clean". I cannot decide if this functionality should be its own call or not.

[codecov[bot]]

Codecov Report

Merging #754 (5b32dcf) into master (5ee7e23) will decrease coverage by 0.07%. The diff coverage is 10.00%.

@@            Coverage Diff             @@
##           master     #754      +/-   ##
==========================================
- Coverage   54.82%   54.74%   -0.08%     
==========================================
  Files          77       77              
  Lines        5611     5621      +10     
==========================================
+ Hits         3076     3077       +1     
- Misses       2255     2264       +9     
  Partials      280      280              

Impacted Files	Coverage Δ
cmd/todo_list.go	12.08% <10.00%> (-0.26%)	:arrow_down:

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[bmeneg]

@prarit, isn't this functionality the same as the one implemented by lab todo done --all ?

[prarit]

Oh .. duh. If only I knew the person who wrote that other command.