[draft] versatile-data-kit: set pre-commit hook for java formatter

[antoniivanov]

We have settled on using Google Java coding style . This is adding pre-commit hook to automatically format the code.

I will create separate PR which reformats all java files

Signed-off-by: Antoni Ivanov [email protected]

[antoniivanov]

This is on hold for now because I have not figure out how to apply the pre-commit hook without requiring java to be installed . Java is only required for control service. There are people that have contributed only to the SDK. We should not require them to have java.