network: peer selector expansion and PeersPhonebookArchivalNodes

[algonautshant]

In this PR:

1. The peer selector is expanded to allow up to 5 classes of peers
2. PeersPhonebookArchivalNodes is introduced, to distinguish between archival and non-archival peers/relays
3. PeersPhonebookArchivalNodes category of nodes is added, which is the same as PeersPhonebookRelays for now.
4. ReadFromSRVPriority is added, which is similar to ReadFromSRV, but also retrieves the priority value of each record. Currently not used.

[codecov]

Codecov Report

Merging #5385 (1ba4a13) into master (3cbb422) will increase coverage by 0.09%.
The diff coverage is 96.61%.

@@            Coverage Diff             @@
##           master    #5385      +/-   ##
==========================================
+ Coverage   55.38%   55.48%   +0.09%     
==========================================
  Files         447      447              
  Lines       63312    63351      +39     
==========================================
+ Hits        35066    35148      +82     
+ Misses      25854    25808      -46     
- Partials     2392     2395       +3     

Impacted Files	Coverage Δ
tools/network/bootstrap.go	71.15% <90.00%> (+71.15%)	⬆️
catchup/peerSelector.go	100.00% <100.00%> (+0.89%)	⬆️
catchup/service.go	72.90% <100.00%> (+0.47%)	⬆️
network/wsNetwork.go	71.28% <100.00%> (+0.66%)	⬆️

... and 9 files with indirect coverage changes

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[algorandskiy]

although ReadFromSRVPriority is not used but it is implemented so that needs to be tested.