Unit tests for HBAR Rate limit

[georgi-l95]

Description:

• Adds unit tests with 100% coverage for new HBAR Rate Limit functionality
• Move all rate limit acceptance tests in one file

Related issue(s):

Fixes #582

Notes for reviewer:

Checklist

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

[sonarqubecloud]

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

Base: 69.14% // Head: 70.58% // Increases project coverage by +1.44% 🎉

Coverage data is based on head (9b284ee) compared to base (466adc6).
Patch coverage: 83.33% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #584      +/-   ##
==========================================
+ Coverage   69.14%   70.58%   +1.44%     
==========================================
  Files          16       16              
  Lines        1076     1088      +12     
  Branches      182      184       +2     
==========================================
+ Hits          744      768      +24     
+ Misses        281      269      -12     
  Partials       51       51              

Impacted Files	Coverage Δ
packages/relay/src/lib/clients/sdkClient.ts	6.83% <0.00%> (-0.09%)	⬇️
packages/relay/src/lib/hbarlimiter/index.ts	100.00% <100.00%> (+82.35%)	⬆️

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