TRIAGE: Fetch PR titles when generating the weekly report

[ecstatic-morse]

We already have the PR number from rustc-perf, so all you need to do is call out to the GitHub API at the appropriate part of the triage report generator. It should be added after the first part of msg:

rustc-perf/triage/weekly_report.py

Lines 180 to 184 in 6c66c38

	pr = res['b']['pr']
	start = res['a']['commit']
	end = res['b']['commit']
	msg = f'[#{pr}]({gh_link(pr)})'

[ecstatic-morse]

@rustbot modify labels to +help-wanted +good-first-issue

[rustbot]

Error: This repository is not enabled to use triagebot.
Add a triagebot.toml in the root of the master branch to enable it.

Please let @rust-lang/release know if you're having trouble with this bot.

[ecstatic-morse]

@Mark-Simulacrum Not sure how often people look for issues in this repo, but I meant for this to be a contribution opportunity. Can you label it as such?

[Mark-Simulacrum]

Probably not very often, but labeled as such. I would be happy to add triagebot btw, just not something I've gotten around to. Feel free to send a PR if you'd like.

[Horki]

@Mark-Simulacrum #809 please review

[Horki]

@Mark-Simulacrum thanks for merging, this can be closed now right?