Update block hex to be 8 bytes in length (release 0.1)

[Nana-EC]

Our current implementation returns 0x0 for nonce on a block response.
However the expectation is an 8byte

• Update eth.ts to use 0x0000000000000000 for nonce
• Update tests

Signed-off-by: Nana-EC [email protected]

Description:

Related issue(s):

Fixes #

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov-commenter]

Codecov Report

Merging #157 (2be004e) into release/0.1 (26649c1) will increase coverage by 0.06%.
The diff coverage is 100.00%.

❗ Current head 2be004e differs from pull request most recent head e2d7ecc. Consider uploading reports for the commit e2d7ecc to get more accurate results

@@               Coverage Diff               @@
##           release/0.1     #157      +/-   ##
===============================================
+ Coverage        66.39%   66.46%   +0.06%     
===============================================
  Files                4        4              
  Lines              491      492       +1     
  Branches            66       66              
===============================================
+ Hits               326      327       +1     
  Misses             148      148              
  Partials            17       17              

Impacted Files	Coverage Δ
packages/relay/src/lib/eth.ts	51.42% <100.00%> (+0.17%)	⬆️

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