feat: add GRPCGatewayRegister interface

[DrmagicE]

No description provided.

[codecov-io]

Codecov Report

Merging #38 (67c5578) into master (4bc55a5) will decrease coverage by 0.03%.
The diff coverage is 57.40%.

@@            Coverage Diff             @@
##           master      #38      +/-   ##
==========================================
- Coverage   36.78%   36.75%   -0.04%     
==========================================
  Files          50       51       +1     
  Lines        4396     4416      +20     
==========================================
+ Hits         1617     1623       +6     
- Misses       2527     2540      +13     
- Partials      252      253       +1     

Impacted Files	Coverage Δ
plugin/admin/admin.go	2.43% <0.00%> (-14.90%)	⬇️
server/server.go	4.82% <0.00%> (+<0.01%)	⬆️
plugin/admin/client.go	65.38% <20.00%> (-5.45%)	⬇️
plugin/admin/subscription.go	65.65% <61.53%> (ø)
plugin/admin/store.go	70.58% <85.00%> (+2.40%)	⬆️
plugin/admin/utils.go	86.48% <86.48%> (ø)
plugin/admin/publish.go	96.29% <100.00%> (ø)

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