Support building lib via JitPack (Jitpack configuration file with jdk11 has to be added)

[carstenhag]

Is your feature request related to a problem? Please describe.
I would like to use jitpack to build coil. Specifically, because #1072 is not merged/released yet :). Other people might want to use it to get snapshots/use master/etc.

Currently, jitpack can't build coil as jitpack's default is jdk8 and coil requires jdk11.

Jitpack build logs: https://jitpack.io/com/github/coil-kt/coil/PR1072-5a30dd96a1-1/build.log

Describe the solution you'd like
Add a jitpack.yml config file

Additional context

• https://jitpack.io/docs/BUILDING/#java-version
• https://github.com/javlock/ostools/blob/dfb8a9d0d53dd5733019ca1141953c9bdcc5f881/jitpack.yml

I think a jitpack.yml file with these contents should do the job:

jdk:
  - openjdk11

[carstenhag]

I have tried it out myself and it works with that config.

https://jitpack.io/com/github/carstenhag/coil/fixresourcescale-24ece8bf93-1/build.log

Also see this branch https://github.com/carstenhag/coil/commits/fixresourcescale & commit: carstenhag@e14ee3e

[colinrtwhite]

Sounds reasonable! I'd rather not officially support Jitpack since Maven (and maven snapshots) are still the preferred way to get the Coil artifact, but it makes sense to unblock Jitpack in this case since it's an easy fix.

[carstenhag]

Thanks for merging the PR :). Yeah I fully agree with you.