Make it possible to use `@buildjet/cache` library as a replacement for `@actions/cache`

## Feature request

We are using the Gradle Build Action for our projects and it works great.
However, we are also interested in switching to BuildJet for better build agents.
They also provide faster cache services than GH Cache ([link](https://buildjet.com/for-github-actions/blog/launch-buildjet-cache)).

Hence the feature request -- allow different cache providers to be used with Gradle Build Action instead of always assuming the action will be using [Github Action's Cache](https://github.com/gradle/gradle-build-action/blob/main/src/cache-utils.ts#L2)

## Other forks

It looks like some people tried to create a fork of gradle-build-action and make it use BuildJet, but it's outdated.
So there seems to be an interest for this feature.

* https://github.com/marketplace/actions/gradle-buildjet-action