feat: add gcfg.Adapter implements using nacos service

[qinyuguang]

No description provided.

[codecov-commenter]

Codecov Report

Base: 76.55% // Head: 76.52% // Decreases project coverage by -0.03% ⚠️

Coverage data is based on head (7902bbd) compared to base (038548c).
Patch coverage: 51.80% of modified lines in pull request are covered.

❗ Current head 7902bbd differs from pull request most recent head 9b4d3ef. Consider uploading reports for the commit 9b4d3ef to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2232      +/-   ##
==========================================
- Coverage   76.55%   76.52%   -0.04%     
==========================================
  Files         581      582       +1     
  Lines       48315    48383      +68     
==========================================
+ Hits        36987    37024      +37     
- Misses       9306     9330      +24     
- Partials     2022     2029       +7     

Flag	Coverage Δ
go-1.15-386	76.52% <51.80%> (-0.03%)	⬇️
go-1.15-amd64	76.53% <51.80%> (-0.06%)	⬇️
go-1.16-386	76.51% <51.80%> (-0.05%)	⬇️
go-1.16-amd64	76.52% <51.80%> (-0.06%)	⬇️
go-1.17-386	76.55% <51.80%> (-0.03%)	⬇️
go-1.17-amd64	76.54% <51.80%> (-0.01%)	⬇️
go-1.18-386	76.43% <51.80%> (-0.06%)	⬇️
go-1.18-amd64	76.48% <51.80%> (-0.03%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
net/ghttp/ghttp_server_service_handler.go	59.70% <0.00%> (ø)
os/gcmd/gcmd_command_object.go	52.41% <0.00%> (ø)
contrib/config/nacos/nacos.go	50.76% <50.76%> (ø)
net/ghttp/ghttp_middleware_handler_response.go	89.47% <71.42%> (+0.90%)	⬆️
os/gfsnotify/gfsnotify_watcher_loop.go	83.19% <0.00%> (ø)
os/gfpool/gfpool_file.go	68.57% <0.00%> (+2.85%)	⬆️

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