☔ release script improvements

[connorjclark]

• smokehouse tmp directory breaks test.sh (test(smokehouse): fix tmp dir usage #9855)
• devtools: add git commit with the expected commit message filled out
• devtools: kick off CQ from CLI
• lr: internal roll script does not use lighthouse-pristine. this is fine when used for development, but when using to roll a release the script should use pristine
• lr: auto update lhVersion variable
• sed doesn't work in linux. Instead of fixing this, I think the scripts should be rewritten in Node
• new contributors should show github names. there may be no API for this, at the least we should log the links to the PRs of new contributors so the usernames can be quickly found
• changelog category order should be specified based on the adhoc ordering we've done (by importance) (misc: order changelog categories. add stable chrome note placeholder #9859)
• changelog generator should include "We expect this release to ship in the DevTools of Chrome XX." with a link to the chrome release dashboard (misc: order changelog categories. add stable chrome note placeholder #9859)
• the bump branch should be named "v$VERSION", that will cause github to set the default PR name to "v$VERSION", making the commit use the same, and passing the "v$VERSION" check that the release script does
• tag isn't pushed
• v6.1.0 #11025 (comment)
• date is off by one https://github.com/GoogleChrome/lighthouse/pull/11730/files#r533013519
• consider running test in Actions using npm pack

[connorjclark]

sed doesn't work in linux. Instead of fixing this, I think the scripts should be rewritten in Node

@patrickhulce WDYT of this?

[patrickhulce]

sed doesn't work in linux.

I'm not sure I believe this statement :) but if you feel it's much easier to accomplish all of this in node then sure let's go for it! the goal of these scripts are to reduce the burden on the releaser as much as possible so whatever accomplishes that SGTM

[connorjclark]

I elided the important info. We use a sed extension that is only standard on Mac.

[connorjclark]

I think we're happy with the release scripts today.