[MEX-336] setupFeesCollector in pair module

[claudiulataretu]

Reasoning

• missing admin query in pair module

Proposed Changes

• add setupFeesCollector tx generator in pair module

How to test

query SetupFeesCollector {
  setupFeesCollector(pairAddress: "erd1qqqqqqqqqqqqqpgquu5rsa4ee6l4azz6vdu4hjp8z4p6tt8m0n4suht3dy") {
    data
  }
}

• query should return generated tx

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01% 🎉

Comparison is base (d7451de) 56.37% compared to head (575edfc) 56.39%.

Additional details and impacted files

@@                   Coverage Diff                    @@
##           feat/admin-endpoints    #1121      +/-   ##
========================================================
+ Coverage                 56.37%   56.39%   +0.01%     
========================================================
  Files                       233      233              
  Lines                      7728     7730       +2     
  Branches                    519      519              
========================================================
+ Hits                       4357     4359       +2     
  Misses                     2929     2929              
  Partials                    442      442              

Flag	Coverage Δ
unittests	56.39% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
...modules/pair/services/pair.transactions.service.ts	80.89% <100.00%> (+0.24%)	⬆️

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