Show if a PR has conflicting files on the PR lists

[jamesorlakin]

As hinted in #8659, this PR adds a simple message to PR lists if a PR has conflicting files. This is all achieved through tweaks to templates - ConflictingFiles array already exists on PR objects. I've chosen mirror as the octicon but I'm sure there's a better one!

[guillep2k]

Nice! Only one nit.

[guillep2k]

Extra line not required

[lafriks]

It would be better to have this not in title but in line below before milestone with diff icon

[codecov-io]

Codecov Report

Merging #10130 into master will decrease coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #10130      +/-   ##
==========================================
- Coverage    43.4%   43.39%   -0.02%     
==========================================
  Files         576      576              
  Lines       79623    79623              
==========================================
- Hits        34560    34552       -8     
- Misses      40785    40791       +6     
- Partials     4278     4280       +2

Impacted Files	Coverage Δ
modules/templates/helper.go	40.36% <ø> (ø)	⬆️
modules/base/tool.go	62.94% <100%> (ø)	⬆️
modules/process/manager.go	74.69% <0%> (-3.62%)	⬇️
modules/queue/unique_queue_disk_channel.go	52.56% <0%> (-1.93%)	⬇️
modules/log/event.go	64.61% <0%> (-1.03%)	⬇️

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[jamesorlakin]

I agree, I'll move it below

[lafriks]

Please also update screenshot when done

[jamesorlakin]

The tweaks now look like this:

It should always appear at the end.

[jolheiser]

Out of scope for this PR, but we might need to consider adding some separators in that area soon. 😂

[jamesorlakin]

Haha, I was debating looking at adding some logic to pop in a | symbol or something!

[lafriks]

Btw can you please send PR to add singular/plural to text (ex 1 conflicting file). You can check activity.tmpl for sample. There is method TrN to do that