feat(jellyfish-api-core): add getAnchorTeams to rpc_masternode

[chee-chyuan]

What this PR does / why we need it:

Added getAnchorTeams rpc to rpc_masternode

Which issue(s) does this PR fixes?:

Fixes # #48

Additional comments?:

[codeclimate]

Code Climate has analyzed commit 104c633 and detected 0 issues on this pull request.

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[codecov]

Codecov Report

Merging #923 (104c633) into main (936c0b3) will increase coverage by 3.72%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #923      +/-   ##
==========================================
+ Coverage   92.31%   96.03%   +3.72%     
==========================================
  Files         146      146              
  Lines        4554     4566      +12     
  Branches      585      585              
==========================================
+ Hits         4204     4385     +181     
+ Misses        347      181     -166     
+ Partials        3        0       -3     

Impacted Files	Coverage Δ
...ages/jellyfish-api-core/src/category/masternode.ts	100.00% <100.00%> (ø)
packages/jellyfish-testing/src/testing.ts	93.42% <100.00%> (+0.56%)	⬆️
...ners/src/containers/RegTestContainer/Persistent.ts	11.53% <0.00%> (-84.62%)	⬇️
packages/jellyfish-api-core/src/category/server.ts	71.42% <0.00%> (-28.58%)	⬇️
packages/jellyfish-json/src/remap.ts	90.90% <0.00%> (-6.07%)	⬇️
packages/jellyfish-transaction/src/tx_composer.ts	78.33% <0.00%> (-1.67%)	⬇️
.../src/containers/RegTestContainer/ContainerGroup.ts	95.74% <0.00%> (+0.39%)	⬆️
packages/jellyfish-testing/src/icxorderbook.ts	100.00% <0.00%> (+1.61%)	⬆️
packages/jellyfish-api-core/src/category/wallet.ts	100.00% <0.00%> (+2.35%)	⬆️
... and 30 more

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