Exposing Engine_GetPayloadV1

[Giulio2002]

No description provided.

[codecov]

Codecov Report

Merging #227 (a3eae74) into master (182df6c) will increase coverage by 0.00%.
The diff coverage is 93.47%.

@@           Coverage Diff           @@
##           master     #227   +/-   ##
=======================================
  Coverage   83.24%   83.24%           
=======================================
  Files          84       87    +3     
  Lines        4147     4160   +13     
=======================================
+ Hits         3452     3463   +11     
- Misses        695      697    +2     

Impacted Files	Coverage Δ
silkrpc/commands/net_api.hpp	0.00% <ø> (ø)
silkrpc/commands/rpc_api.hpp	0.00% <0.00%> (ø)
silkrpc/commands/engine_api.cpp	80.00% <80.00%> (ø)
silkrpc/commands/engine_api.hpp	100.00% <100.00%> (ø)
silkrpc/context_pool.cpp	100.00% <100.00%> (ø)
silkrpc/ethbackend/backend.hpp	100.00% <100.00%> (ø)
silkrpc/ethbackend/backend_grpc.cpp	98.31% <100.00%> (ø)
silkrpc/ethbackend/backend_grpc.hpp	100.00% <100.00%> (ø)

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[canepat]

The test module for BackEndGrpc should be named backend_grpc_test.cpp instead of backend_test.cpp for consistency