Add getConnectionCount rpc

[jingyi2811]

/kind feature

Add new getConnectionCount rpc

[netlify]

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[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
packages/jellyfish/dist/jellyfish.umd.js	18.62 KB (+0.57% 🔺)	373 ms (+0.57% 🔺)	164 ms (+6.36% 🔺)	536 ms

[codecov]

Codecov Report

Merging #176 (6332431) into main (79309a8) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #176      +/-   ##
==========================================
+ Coverage   95.48%   95.50%   +0.02%     
==========================================
  Files          54       55       +1     
  Lines        1152     1158       +6     
  Branches      138      138              
==========================================
+ Hits         1100     1106       +6     
  Misses         50       50              
  Partials        2        2              

Impacted Files	Coverage Δ
packages/jellyfish-api-core/src/category/net.ts	100.00% <100.00%> (ø)
packages/jellyfish-api-core/src/index.ts	100.00% <100.00%> (ø)

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[fuxingloh]

refer to https://github.com/DeFiCh/jellyfish/pull/162/files PR, when you add a new category you need to update sidebar else it will not be indexed:

https://deploy-preview-176--jellyfish-defi.netlify.app/docs