* Enhance PolicyRequestModel and SavePolicyRequest with validation for policy data and metadata.
* Add integration tests for policy updates to validate handling of invalid data types in PolicyRequestModel and SavePolicyRequest.
* Add missing using
* Update PolicyRequestModel for null safety by making Data and ValidateAndSerializePolicyData nullable
* Add integration tests for public PoliciesController to validate handling of invalid data types in policy updates.
* Add PolicyDataValidator class for validating and serializing policy data and metadata based on policy type.
* Refactor PolicyRequestModel, SavePolicyRequest, and PolicyUpdateRequestModel to utilize PolicyDataValidator for data validation and serialization, removing redundant methods and improving code clarity.
* Update PolicyRequestModel and SavePolicyRequest to initialize Data and Metadata properties with empty dictionaries.
* Refactor PolicyDataValidator to remove null checks for input data in validation methods
* Rename test methods in SavePolicyRequestTests to reflect handling of empty data and metadata, and remove null assignments in test cases for improved clarity.
* Enhance error handling in PolicyDataValidator to include field-specific details in BadRequestException messages.
* Enhance PoliciesControllerTests to verify error messages for BadRequest responses by checking for specific field names in the response content.
* refactor: Update PolicyRequestModel and SavePolicyRequest to use nullable dictionaries for Data and Metadata properties; enhance validation methods in PolicyDataValidator to handle null cases.
* test: Add integration tests for handling policies with null data in PoliciesController
* fix: Catch specific JsonException in PolicyDataValidator to improve error handling
* test: Add unit tests for PolicyDataValidator to validate and serialize policy data and metadata
* test: Update PolicyDataValidatorTests to validate organization data ownership metadata
* Add CreateCollectionAsync method to OrganizationTestHelpers for collection creation with user and group associations
* Update public MembersController List endpoint to include associated collections in member response model
* Update MembersControllerTests to validate collection associations in List endpoint. Add JsonConstructor to AssociationWithPermissionsResponseModel
* Refactor MembersController by removing unused IUserService and IApplicationCacheService dependencies.
* Remove nullable disable directive from Public MembersController
* Add Collections Tests
* Update CollectionRepository Implementation
* Test Adding And Deleting Through Replace
* Format
* Fix Most Test Warnings
* Format
* Renamed ProductType to ProductTierType
* Renamed Product properties to ProductTier
* Moved ProductTierType to Bit.Core.Billing.Enums namespace from Bit.Core.Enums
* Moved PlanType enum to Bit.Core.Billing.Enums
* Moved StaticStore to Bit.Core.Billing.Models.StaticStore namespace
* Added ProductType enum
* dotnet format
