Feat/support api v7.2.0

[ghost]

Description

This PR closes #395 by supporting GetTransactionsForTxBlockEx and GetTxnBodiesForTxBlockEx.

Motivation and Context

How has this been tested?

Screenshots (if appropriate):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [x] Add tests to cover changes as needed.
• [ ] Update documentation as needed.

[codecov-commenter]

Codecov Report

Merging #400 (88721b0) into dev (76b5911) will increase coverage by 0.13%. The diff coverage is 100.00%.

:exclamation: Current head 88721b0 differs from pull request most recent head 2b43bc8. Consider uploading reports for the commit 2b43bc8 to get more accurate results

@@            Coverage Diff             @@
##              dev     #400      +/-   ##
==========================================
+ Coverage   80.89%   81.02%   +0.13%     
==========================================
  Files          43       43              
  Lines        1795     1808      +13     
  Branches      326      330       +4     
==========================================
+ Hits         1452     1465      +13     
  Misses        342      342              
  Partials        1        1              

Impacted Files	Coverage Δ
packages/zilliqa-js-blockchain/src/chain.ts	67.00% <100.00%> (+1.92%)	:arrow_up:
packages/zilliqa-js-core/src/net.ts	98.66% <100.00%> (+0.03%)	:arrow_up:

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