Client & Server Generator: added support for protobuffer handling

[donutloop]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 27

• 60 of 178 (33.71%) changed or added relevant lines in 4 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+1.5%) to 20.341%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/xgenerator/types/goblock.go	0	6	0.0%
integration_tests/api_hello_world/helloworld.proto.go	59	99	59.6%
generator/proto/go/api.go	0	72	0.0%

Files with Coverage Reduction	New Missed Lines	%
generator/proto/go/api.go	1	0.0%

Totals
Change from base Build 24:	1.5%
Covered Lines:	681
Relevant Lines:	3348

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 29

• 60 of 178 (33.71%) changed or added relevant lines in 4 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+1.5%) to 20.341%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/xgenerator/types/goblock.go	0	6	0.0%
integration_tests/api_hello_world/helloworld.proto.go	59	99	59.6%
generator/proto/go/api.go	0	72	0.0%

Files with Coverage Reduction	New Missed Lines	%
generator/proto/go/api.go	1	0.0%

Totals
Change from base Build 24:	1.5%
Covered Lines:	681
Relevant Lines:	3348

---

💛 - Coveralls