fix: change path params with pattern

[agungcandra]

Regarding this issue #97

After checking on the issue, the issue is when using resource path, memory usage of the application is increased gradually since every request that processed by service will have new entries on prometeus metrics

After check on grpc-gateway documentation
https://grpc-ecosystem.github.io/grpc-gateway/docs/operations/annotated_context/

It seems using pattern is much more suitable, since the same pattern can be grouped on the same entries

[codecov-commenter]

Codecov Report

Patch coverage: 87.50% and project coverage change: +0.57% 🎉

Comparison is base (7c9248f) 84.15% compared to head (9d6005e) 84.72%.
Report is 2 commits behind head on master.

❗ Current head 9d6005e differs from pull request most recent head d3aef8c. Consider uploading reports for the commit d3aef8c to get more accurate results

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Additional details and impacted files

@@            Coverage Diff             @@
##           master      #98      +/-   ##
==========================================
+ Coverage   84.15%   84.72%   +0.57%     
==========================================
  Files          20       20              
  Lines        1571     1578       +7     
==========================================
+ Hits         1322     1337      +15     
+ Misses        213      205       -8     
  Partials       36       36              

Files Changed	Coverage Δ
boot/gw_server_options.go	96.85% <85.71%> (+6.76%)	⬆️
middleware/common.go	96.51% <100.00%> (ø)
middleware/timeout/server_interceptor.go	100.00% <100.00%> (ø)

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