feat(custom-rpc): add account roles and LP info to custom RPC

[acdibble]

Pull Request

Closes: WEB-478

Checklist

Please conduct a thorough self-review before opening the PR.

• I am confident that the code works.
• I have updated documentation where appropriate.

Summary

This old method was no longer used and only returned validator information.

The method has been rewritten to be role agnostic. We can no longer use a struct and have a dynamic return shape. Ideally we would have some tests of these custom RPCs to cement in the behavior. Maybe someone can help me here?

[linear]

WEB-478 LP info custom RPC

Currently, we have an account info custom RPC. However, this RPC is focused entirely on accounts with the validator role.

We need to add a new custom RPC that takes an account ID and returns:

• balances of assets
• refund addresses
• total collected fees (or maybe this will need to be performed by the processor)

[codecov]

Codecov Report

Merging #4089 (9bfafdb) into main (6c8f435) will increase coverage by 0%.
Report is 1 commits behind head on main.
The diff coverage is 68%.

@@          Coverage Diff           @@
##            main   #4089    +/-   ##
======================================
  Coverage     71%     71%            
======================================
  Files        377     377            
  Lines      59885   60020   +135     
  Branches   59885   60020   +135     
======================================
+ Hits       42621   42760   +139     
- Misses     15018   15019     +1     
+ Partials    2246    2241     -5     

Files	Coverage Δ
state-chain/runtime/src/runtime_apis.rs	83% <60%> (+<1%)	⬆️
state-chain/primitives/src/chains.rs	75% <0%> (-4%)	⬇️
state-chain/custom-rpc/src/lib.rs	20% <86%> (+20%)	⬆️
state-chain/runtime/src/lib.rs	35% <6%> (+<1%)	⬆️

... and 4 files with indirect coverage changes

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[dandanlen]

Nice.

[dandanlen]

👌