add fees collector address labelling

[cfaur09]

Description of the reasoning behind the pull request (what feature was missing / how the problem was manifesting itself / what was the motive behind the refactoring)

• there was no label for fees collector address

Proposed Changes

• add label to fees collector address

How to test

• accounts/erd1qqqqqqqqqqqqqpgqur83hqn9j4y6v93m09nn2q0yazuhk2rvpr9sarz5yj -> assets attribute should be defined

[codecov-commenter]

Codecov Report

Base: 66.98% // Head: 66.64% // Decreases project coverage by -0.33% :warning:

Coverage data is based on head (3a55d46) compared to base (6bcf526). Patch coverage: 31.57% of modified lines in pull request are covered.

Additional details and impacted files

@@               Coverage Diff               @@
##           development     #894      +/-   ##
===============================================
- Coverage        66.98%   66.64%   -0.34%     
===============================================
  Files              501      502       +1     
  Lines            12718    12737      +19     
  Branches          1303     1305       +2     
===============================================
- Hits              8519     8489      -30     
- Misses            3052     3100      +48     
- Partials          1147     1148       +1     

Flag	Coverage Δ
integrationtests	66.64% <31.57%> (-0.34%)	:arrow_down:
unittests	28.51% <100.00%> (+0.30%)	:arrow_up:

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

Impacted Files	Coverage Δ
src/common/assets/assets.service.ts	24.19% <0.00%> (-0.40%)	:arrow_down:
src/endpoints/mex/mex.settings.service.ts	65.15% <10.00%> (-9.85%)	:arrow_down:
src/endpoints/mex/entities/mex.fee.collector.ts	66.66% <66.66%> (ø)
src/utils/cache.info.ts	82.71% <100.00%> (+0.21%)	:arrow_up:
src/common/locked-asset/locked-asset.service.ts	32.55% <0.00%> (-45.35%)	:arrow_down:
src/common/entities/unlock-schedule.ts	62.50% <0.00%> (-37.50%)	:arrow_down:
...ing/transaction.action.stake.recognizer.service.ts	56.92% <0.00%> (-10.77%)	:arrow_down:
...ognizers/mex/mex.wrap.action.recognizer.service.ts	78.57% <0.00%> (-7.15%)	:arrow_down:
src/utils/token.helpers.ts	64.58% <0.00%> (-4.17%)	:arrow_down:
src/endpoints/nodes/node.service.ts	50.36% <0.00%> (-0.73%)	:arrow_down:
... and 6 more

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[dragos-rebegea]

I think you can even have a much bigger ttl; there is only one address and it doesn`t change