feat(gRPC): add only_connected parameter to getNetworkInfo API

[kehiy]

Description

This PR updates the Network API in gRPC to display only connected peers. Connected peers are those with a status of "Connected" or "Known".

[b00f]

@kehiy
Please test it.
Can you add HTTP page for only connected peers: like "/network/connected"

[kehiy]

@b00f HTTP is supported for this flag too. we can use it like:

http://localhost:8081/network?onlyConnected=true

[codecov]

Codecov Report

Attention: Patch coverage is 55.55556% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 75.93%. Comparing base (20e991a) to head (6a6ca1d).

❗ Current head 6a6ca1d differs from pull request most recent head e78101b. Consider uploading reports for the commit e78101b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1264      +/-   ##
==========================================
- Coverage   76.05%   75.93%   -0.13%     
==========================================
  Files         206      206              
  Lines       10672    10680       +8     
==========================================
- Hits         8117     8110       -7     
- Misses       2169     2179      +10     
- Partials      386      391       +5     

[kehiy]

@b00f can you have a review?