feat: add getParsedBlock method to Connection

[jstarry]

Problem

No way to fetch a jsonParsed encoded block with web3.js

Summary of Changes

• Added Connection.getParsedBlock method

Fixes #

[mergify]

automerge label removed due to a CI failure

[codecov]

Codecov Report

Merging #28345 (7cb0925) into master (e6687b8) will increase coverage by 0.1%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #28345     +/-   ##
=========================================
+ Coverage    77.3%    77.5%   +0.1%     
=========================================
  Files          55       55             
  Lines        2889     2926     +37     
  Branches      402      407      +5     
=========================================
+ Hits         2234     2268     +34     
- Misses        514      517      +3     
  Partials      141      141