refactor!: better configuration for discovery providers

[Tochemey]

SetConfig has been removed from the provider interface

closes #299
closes #300

[codecov]

Codecov Report

Attention: Patch coverage is 92.20779% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 86.71%. Comparing base (f1d8604) to head (c1bf3b3).

Files	Patch %	Lines
discovery/mdns/discovery.go	72.72%	1 Missing and 2 partials ⚠️
discovery/nats/discovery.go	77.77%	1 Missing and 1 partial ⚠️
discovery/dnssd/discovery.go	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #314      +/-   ##
==========================================
- Coverage   87.16%   86.71%   -0.46%     
==========================================
  Files          31       33       +2     
  Lines        3186     3055     -131     
==========================================
- Hits         2777     2649     -128     
+ Misses        296      295       -1     
+ Partials      113      111       -2     

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