Add initSettings() to NodeRay

[patinthehat]

This PR adds NodeRay.initSettings() and removes async from the NodeRay.create() method.

[what-the-diff]

PR Summary

• Improvement in User Guide
  We've updated the README.md file to include a hint about initializing settings before using the application. This will offer better usability to anyone trying to implement our solution in a NodeJS environment.

• Functionality Enhancement in Application Initialization
  We made some changes to the RayNode.ts file. We introduced a new method initSettings which enables the application settings to be set up before creating an instance of Ray. That method is now also integrated into the create method to ensure the settings are always initialized when a new Ray instance is created.

• Code Simplification in Settings Retrieval
  We simplified our code in the SettingsFactory.ts file. Previously, some methods used a programming feature called await unnecessarily. Removing these from the getSettingsFromConfigFile, searchConfigFiles, and searchConfigFilesOnDisk methods has made our code more efficient and easier to maintain.

• Code Clean Up in File Searching Function
  In the findUp.ts file, we refined the findUp function by removing the superfluous await keyword. The simplification leads to easier understanding and less complexity during code maintenance.

[codecov]

Codecov Report

Attention: Patch coverage is 86.95652% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 87.22%. Comparing base (f10a743) to head (cc8bbfb).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #269      +/-   ##
==========================================
- Coverage   87.34%   87.22%   -0.12%     
==========================================
  Files          67       67              
  Lines        3404     3418      +14     
  Branches      529      528       -1     
==========================================
+ Hits         2973     2981       +8     
- Misses        431      437       +6     

Files	Coverage Δ
src/Settings/SettingsFactory.ts	92.43% <100.00%> (-6.06%)	⬇️
src/lib/findUp.ts	86.42% <100.00%> (ø)
src/RayNode.ts	80.19% <82.36%> (+0.85%)	⬆️

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