Add release automation

[agilgur5]

Release / Publishing automation

Add GH Action(s) for release automation.

This is a fairly important piece that I've been missing in my libraries for a bit now and that simplifies the process of publishing into something that requires less effort and can have a quick loop (at least from PR to patch release).
This would also make it less error-prone (even I forget my own release steps occasionally after being away for a while, due to some of the manual portions that I never got around to automating) and easier to hand-off to collaborators to release too; not dependent on a single person to do releases then.

Can see some past thoughts and tools here: jaredpalmer/tsdx#254 (comment)

A brief list (will add more over time):

• dripip
• auto
• craft

Nice to have: create GH release with the compiled/bundled JS code as well as artifacts (not just the source in the GH release)

Changelog / Release Notes vs. Publishing

May need/want a separate tool for changelog generation/release notes vs. just publishing a release.

I do more or less like the release notes I've crafted for TSDX and rpt2

Some tools (will add more over time):

• changesets
• @agilgur5/changelog-maker (my outdated fork of Node's changelog-maker)

other potential GH Actions to add

Split off from #1 (comment)

Might also want to add actions for community management, e.g. auto mark as stale if no OP response in 30+ days, auto-lock in 90+ days if closed, stale, and no response