Support google-java-format

[CsCherrYY]

fix #663, based on #3059, will rebase when #3059 gets merged.

sample to enable google style:

    "java.format.scheme": "google"

or

    "java.format.scheme": {
        "style": "google"
    },

#2955 can be updated once this PR gets merged.

[ringin31]

what is that password