Initial stub for custom webhooks

[deepio]

I thought it would be best to start making a customizable webhook instead of creating an integration for everything under the sun. We can add more optional headers as they come up?

[lunny]

I expect there is a config file to add more than one custom webhook.

[codecov-commenter]

Codecov Report

Merging #18748 (672a4d2) into main (4d93984) will decrease coverage by 0.09%.
The diff coverage is 40.04%.

@@            Coverage Diff             @@
##             main   #18748      +/-   ##
==========================================
- Coverage   46.64%   46.54%   -0.10%     
==========================================
  Files         846      853       +7     
  Lines      121331   122586    +1255     
==========================================
+ Hits        56595    57061     +466     
- Misses      57859    58637     +778     
- Partials     6877     6888      +11     

Impacted Files	Coverage Δ
cmd/admin_auth_ldap.go	79.59% <ø> (ø)
models/webhook/hooktask.go	50.29% <ø> (ø)
models/webhook/webhook.go	70.84% <ø> (ø)
modules/git/pipeline/lfs_nogogit.go	0.00% <0.00%> (ø)
modules/git/pipeline/namerev.go	0.00% <0.00%> (ø)
modules/queue/manager.go	39.59% <0.00%> (-0.83%)	⬇️
modules/queue/queue_bytefifo.go	46.90% <0.00%> (-2.54%)	⬇️
routers/api/v1/repo/migrate.go	50.71% <0.00%> (ø)
routers/api/v1/repo/patch.go	0.00% <0.00%> (ø)
routers/private/hook_verification.go	0.00% <0.00%> (ø)
... and 69 more

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[deepio]

Something broke since I last built this, I will @ someone when its ready for review but until then this is broken.

[zeripath]

So if I understand this code correctly - this custom hook is essentially:

1. Provide one url
2. Send all of the hook results to that url

?

[deepio]

One URL is required, everything else is optional. Optional headers, optional POST data, POST or GET option but right now this is to get the ball rolling.

[KN4CK3R]

Could replace #18224

[lunny]

That PR has been merged.

[lunny]

comment is needed.