Use SocketAddr for all addresses in network config

[sandreae]

Use SocketAddr everywhere in network config rather than MultiAddr.

📋 Checklist

• Add tests that cover your changes
• Add this PR to the Unreleased section in CHANGELOG.md
• Link this PR to any issues it closes
• New files contain a SPDX license header

[codecov]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (94bc8e9) 92.48% compared to head (f8e62f1) 92.46%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #576      +/-   ##
==========================================
- Coverage   92.48%   92.46%   -0.02%     
==========================================
  Files         106      106              
  Lines       18396    18400       +4     
==========================================
+ Hits        17013    17014       +1     
- Misses       1383     1386       +3     

Files	Coverage Δ
aquadoggo/src/network/config.rs	100.00% <ø> (ø)
aquadoggo/src/network/service.rs	30.42% <0.00%> (+0.38%)	⬆️
aquadoggo/src/network/utils.rs	60.86% <0.00%> (-32.47%)	⬇️

... and 2 files with indirect coverage changes

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