Added tracking of logging user's federation identifier

[jongpie]

Metadata changes

• Added new long textarea (512) fields LoggedByFederationIdentifier__c on LogEntryEvent__e and Log__c to track the value of Schema.User.FederationIdentifier for the logging user
• Added new field Log__c.HasLoggedByFederationIdentifier__c to make it easier to filter/identify records where the user's federation ID has been populated
• Renamed the Big Object index LogEntryArchiveIndex.indexe-meta.xml to LogEntryArchiveIndex.index-meta.xml (indexe --> index) to fix an issue with newer versions of the sf cli

Pipeline changes

• Deleted several old scripts in package.json and in the directory ./scripts/build
• Upgraded package dependencies & regenerated package-lock.json
• Tweaked config in .prettierrc
• Updated GitHub Actions in build.yml to use v4 (compatible with Node 20)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.67%. Comparing base (18b4b52) to head (15d2304).

❗ Current head 15d2304 differs from pull request most recent head 08bcdbf. Consider uploading reports for the commit 08bcdbf to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #682   +/-   ##
=======================================
  Coverage   95.67%   95.67%           
=======================================
  Files          50       50           
  Lines        5597     5597           
=======================================
  Hits         5355     5355           
  Misses        242      242           

Flag	Coverage Δ
Apex	95.67% <100.00%> (ø)

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