feat(grpcserver): Added bufconn connection factory

[Skyld]

• feat(grpcserver): Added bufconn connection factory
• feat(grpcserver): Added factory tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (60ac675) to head (efe113a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #284      +/-   ##
===========================================
+ Coverage   96.13%   100.00%   +3.86%     
===========================================
  Files         182        14     -168     
  Lines        6366       474    -5892     
===========================================
- Hits         6120       474    -5646     
+ Misses        174         0     -174     
+ Partials       72         0      -72     

Flag	Coverage Δ
config	?
fxconfig	?
fxcore	?
fxcron	?
fxgenerate	?
fxgrpcserver	?
fxhealthcheck	?
fxhttpclient	?
fxhttpserver	?
fxlog	?
fxmetrics	?
fxorm	?
fxsql	?
fxtrace	?
fxworker	?
generate	?
grpcserver	100.00% <100.00%> (ø)
healthcheck	?
httpclient	?
httpserver	?
log	?
orm	?
sql	?
trace	?
worker	?

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