New quicksilverjs using grpc-gateway

[hoangdv2429]

1. Summary

This PR contains a massively updated quicksilver-js.

2.Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

3. Implementation details

4. How to test/use

from README.md but using createGrpcGatewayClient instead of the one in the manual.

5. Checklist

• update README
• testing using jest/spec
• fix eslint/type errors.
• fix camelCase and snake_case compability.

6. Limitations (optional)

7. Future Work (optional)

[codecov]

Codecov Report

Merging #566 (cb8bb0a) into develop (a28e49a) will not change coverage.
Report is 1 commits behind head on develop.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #566   +/-   ##
========================================
  Coverage    13.19%   13.19%           
========================================
  Files          243      243           
  Lines        62942    62942           
========================================
  Hits          8306     8306           
  Misses       53967    53967           
  Partials       669      669           

Flag	Coverage Δ
unittests	13.19% <ø> (ø)

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

[chalabi2]

@hoangdv2429 can you provide a little more insight here

fix eslint/type errors.
fix camelCase and snake_case compability

maybe an example of those issues.

[hoangdv2429]

what I mean by that is fixing telescope:

1. there are some type errors in the library (mostly with Timestamp, could just change it to Date so Typescript won't complain about it). but if we fix it, we'll fix it in Telescope. It still work, but I just get annoyed by those red mark.
2. for example, when you're querying for delegationUnbonding the type of delegationUnbonding is delegateAddress and validatorAddress but the actual fm.renderURL is using delegate_address and validator_address. (this is only an example, could not 100% named like this)
   All of those errors should be fix in telescope and then regen the library.

[hoangdv2429]

take this as an example.