feat: Support deselecting streams by default

[edgarrmondragon]

• Closes [Feature]: Support de-selecting a stream by default #1203

TODO:

• Tests
• Docs

[codecov]

Codecov Report

Merging #1672 (24d197e) into main (1ba86b3) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1672      +/-   ##
==========================================
+ Coverage   85.07%   85.11%   +0.04%     
==========================================
  Files          59       59              
  Lines        4864     4865       +1     
  Branches      807      806       -1     
==========================================
+ Hits         4138     4141       +3     
+ Misses        527      526       -1     
+ Partials      199      198       -1     

Impacted Files	Coverage Δ
singer_sdk/_singerlib/catalog.py	98.14% <ø> (ø)
singer_sdk/streams/core.py	83.05% <100.00%> (+0.03%)	⬆️

... and 1 file with indirect coverage changes

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[edgarrmondragon]

Surprisingly, test coverage didn't drop but I still want to add a few test cases

[edgarrmondragon]

Documentation: https://meltano-sdk--1672.org.readthedocs.build/en/1672/classes/singer_sdk.Stream.html#singer_sdk.Stream.selected_by_default