[v2] use gogo protobuf fork

[waynz0r]

Q	A
Bug fix?	no
New feature?	no
API breaks?	no
Deprecations?	no
Related tickets
License	Apache 2.0

What's in this PR?

Use github.com/waynz0r/protobuf gogo protobuf full fork and get rid of the replacement directive in go.mod. The protobuf fork was modified to be a full fork with changed import paths.

Why?

The fork is needed to support int64/uint64 marshalling to integers. Using the fork with replacement in go.mod made the api hard to use as the replacement was necessary everywhere locally.

[waynz0r]

there are unmarshal issues, i set it to draft for now

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