Move `.cache\tooling\gradle\versions.json` to a folder in Gradle's or Eclipse's

[altrisi]

In my case, the entire .cache folder is only used for that single file, and it's annoying to have it there knowing it's only used for that.

I'd expect Buildship to instead use a folder instead inside Gradle's .gradle folder or at least in some Eclipse folder. Or maybe the system's temp folder, given the file is only valid for a day.

The file path is decided here: https://github.com/eclipse/buildship/blob/35d01caad3ab023fdd9fdf4a1b9e9c738bff7fd0/org.eclipse.buildship.core/src/main/java/org/eclipse/buildship/core/internal/util/gradle/PublishedGradleVersions.java#L224

[donat]

You can set the XDG_CACHE_HOME environmental variable for Eclipse to move the versions.json file to a better location.

[altrisi]

Opened a PR for this