feat(SDK-4543): Support Organizations with Client Grants

[evansims]

Changes

This pull request adds functionality associated with Organizations and Client Grants. It introduces support for:

• Retrieving Organizations associated with a Client Grant.
• Retrieving Client Grants associated with an Organization.
• Associating or disassociating client grants from organizations.

References

Please review internal ticket SDK-4543.

Testing

Tests have been added and updated to cover these changes. Coverage remains at 100%.

Contributor Checklist

• I agree to adhere to the Auth0 General Contribution Guidelines.
• I agree to uphold the Auth0 Code of Conduct.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (6764f47) 100.00% compared to head (b294a1b) 100.00%.

Additional details and impacted files

@@             Coverage Diff             @@
##                main      #736   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
- Complexity      1330      1338    +8     
===========================================
  Files             62        62           
  Lines           4615      4670   +55     
===========================================
+ Hits            4615      4670   +55     

Flag	Coverage Δ
unittestsvalidate	100.00% <100.00%> (ø)

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Files	Coverage Δ
src/API/Management/ClientGrants.php	100.00% <100.00%> (ø)
src/API/Management/Organizations.php	100.00% <100.00%> (ø)

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