Add a webhook for builds about poggit

[SOF3]

Webhooks might be a better choice after all.

[SOF3]

Webhooks will be implemented in a way similar to that in Travis-CI. Available actions should include "email", "slack", "gh-comment", "webhook" and "notifico".
I don't want to play with crypto stuff, so there may be an internal key storage uploaded to Poggit directly.

[SOF3]

What do you think if we only send commit comments to the repo (see #31) and then you detect the information according to the commit comments? This is still possible, as a commit comment is sent by @poggit-bot if and only if it is a comment related to reviewing. We may have some <!-- {"json":["data","here"]} --> in the comment.

[SOF3]

Any specific information you need in such a webhook?

[Thunder33345]

I would guess just general like centralized overview of things on x channel

[catgirlinspace]

Build status (Failed, 1 lint error, Passed) and if it failed or had a lint error it should probley include why it failed. It should also include a link to the build, the repo name, and the build number (dev:1, pr:1). Of course, there's a lot more, but this is all I can think of.

[catgirlinspace]

And for things like releases getting reviewed, it should include the GitHub name of the reviewer, the review, and what release the review was posted on.

[catgirlinspace]

That might work, but I still think proper webhooks should be added.

[SOF3]

Proper webhooks will require an additional interface for webhook management, which requires much work. I don't want to unnecessarily reinvent something that we can access already.

[Thunder33345]

i would recon just scrap poggit in a gentle way
by whenever a commit is made, send a POST to a handler which would figure out build ID and so on,
then proceed to scrap poggit for lint issues
then calling the discord webhook, IF there any issues

[SOF3]

Webhook management and the relevant security management etc. would indeed be a lot of work. I will keep it to GitHub comments.
Also note that there is supposedly a "user timeline" feature, which is a list API for the user's latest notifications, but not webhooks.

[SOF3]

Duplicates #31.

[catgirlinspace]

Yay!