Convert to typescript based action

[rajbos]

See 'load-available-actions'

[sebastienvermeille]

Hi @rajbos do you mean you would like to have this action ported to Typescript rather than PowerShell?

Interesting move, I think it will ease contributions

[rajbos]

Correct. I have a customer that does not have any PowerShell anywhere, and is running their containers exclusively from an internal Artifactory cache. I've learned that them embracing this action has an extra hurdle, as they need to overwrite the container being used and then pull in that extra dependency into Artifactory (so another bump on the road).

Just making this a Typescript based action makes all of those bumps go away, and thus makes it easier to run. It does add a dependency on the correct Node version on the runner, which I am OK with. as I keep those up to date as much as possible in my actions anyway (and most self-hosted runners have to follow along anyway, as GitHub deprecates the old version anyway every once in a while).

Seems like I already started a conversion in the typescript branch, although it misses your last updates ofc. Not sure how far along I was already though.