Enable Gradle Caching for compilation tasks

[Dkhusainov]

Currently tasks compileKotlin$Preset are only checked for UP-TO-DATE and not cached to gradle build cache. Running a build scan on my native build showed that "Not cacheable | Caching has not been enabled for the task."

[fab1an]

Please prioritize this, it's an easy win.

[Dkhusainov]

@ilmat192 Is this implemented yet? If it is I'm gonna close it.
##2758

[ilmat192]

No, it isn't implemented yet.

[ddnn55]

Compilation of my small multiplatform lib (including iOS target) takes forever (4m 53s) even locally. Is my build misconfigured or is it expected to be very slow until this issue is closed?

[ddnn55]

Specifically, linkMyLibReleaseFrameworkIos seems to take the majority of that time.

[artdfel]

According to migrating issue tracking to YouTrack, I'm closing this issue in favor of https://youtrack.jetbrains.com/issue/KT-39564. I also posted the link onto this issue there, just to save the context.