cleanup/enhancement: remove unnecessary proto from the sdk and add compdb suport

[wbpcode]

These protos should be part of specific plugin, but shouldn't be part of the SDK. This change make the SDK more thin and one day we may could make this a single/double file SDK.

To close #183

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[wbpcode]

cc @mpwarres cc @PiotrSikora

[wbpcode]

Friendly ping @mpwarres