RecordsQuery & RecordsSubscribe supports an array for author and recipient

[LiranCohen]

Introduce filtering by multiple authors or recipients. The filters are backward compatible, so that author and recipient filters now accept a string or Array<string>.

NOTE: If an empty array is passed into the filter, it is treated as an undefined filter.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.63%. Comparing base (8d574ed) to head (c06f76a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #777   +/-   ##
=======================================
  Coverage   98.62%   98.63%           
=======================================
  Files          73       73           
  Lines       11293    11335   +42     
  Branches     1616     1628   +12     
=======================================
+ Hits        11138    11180   +42     
  Misses        149      149           
  Partials        6        6           

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