Multi client 👨‍🦯

[BeroBurny]

this is kinda big so submitted draft to check if I'm going in a good direction whit it

• improve package.json scripts (now you can run all-important commands with yarn)
• update beacon node versions (meanwhile some get newer versions)
• implement nimbus beacon node (WIP)
  • implement tests
  • implement ETH2 client
    • think it is not working at 100%
  • implement nimbus to ChainGuardian
    • dev problem with CORS
• implement prysom beacon node (WIP)
  • implement tests
  • implement ETH2 client
    • missing many endpoints (added TODO's for every of it)
  • implement nimbus to ChainGuardian

Closes #550
Closes #551

[lgtm-com]

This pull request introduces 3 alerts when merging cb0eec2 into 1b6ed34 - view on LGTM.com

new alerts:

• 3 for Unused variable, import, function or class

[mpetrunic]

you should at least load this from some config so that it depends on network

[codecov]

Codecov Report

Merging #565 (d55c8d4) into develop (1b6ed34) will decrease coverage by 4.29%.
The diff coverage is 27.27%.

@@             Coverage Diff             @@
##           develop     #565      +/-   ##
===========================================
- Coverage    52.79%   48.50%   -4.30%     
===========================================
  Files           95      110      +15     
  Lines         1644     1977     +333     
  Branches       182      214      +32     
===========================================
+ Hits           868      959      +91     
- Misses         747      989     +242     
  Partials        29       29              

Flag	Coverage Δ
unit	48.50% <27.27%> (-4.30%)	⬇️

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

Impacted Files	Coverage Δ
src/renderer/services/api/http/httpClient.ts	11.42% <0.00%> (-0.34%)	⬇️
src/renderer/services/eth2/client/defaults.ts	40.00% <ø> (ø)
...vices/eth2/client/eth2ApiClient/cgEth2BeaconApi.ts	31.25% <ø> (ø)
...eth2/client/eth2ApiClient/cgEth2BeaconBlocksApi.ts	13.33% <0.00%> (ø)
...s/eth2/client/eth2ApiClient/cgEth2BeaconPoolApi.ts	21.42% <ø> (ø)
.../eth2/client/eth2ApiClient/cgEth2BeaconStateApi.ts	8.82% <ø> (ø)
...services/eth2/client/eth2ApiClient/cgEth2Config.ts	16.66% <ø> (ø)
...vices/eth2/client/eth2ApiClient/cgEth2EventsApi.ts	16.12% <ø> (ø)
...ervices/eth2/client/eth2ApiClient/cgEth2NodeApi.ts	11.11% <ø> (ø)
...s/eth2/client/eth2ApiClient/cgEth2ValidatorApi.tsx	9.75% <ø> (+0.23%)	⬆️
... and 33 more

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