Refactor policy checks (#1536)

* Move policy checking logic inside PolicyService

* Refactor to use currentContext.ManagePolicies

* Make orgUser status check more semantic

* Fix single org user checks

* Use CoreHelper implementation to deserialize json

* Refactor policy checks to use db query

* Use new db query for enforcing 2FA Policy

* Add Policy_ReadByTypeApplicableToUser

* Stub out EF implementations

* Refactor: use PolicyRepository only

* Refactor tests

* Copy SQL queries to proj and update sqlproj file

* Refactor importCiphersAsync to use new method

* Add EF implementations and tests

* Refactor SQL to remove unnecessary operations

src/Core/Repositories/IPolicyRepository.cs

@@ -11,5 +11,9 @@ namespace Bit.Core.Repositories
         Task<Policy> GetByOrganizationIdTypeAsync(Guid organizationId, PolicyType type);
         Task<ICollection<Policy>> GetManyByOrganizationIdAsync(Guid organizationId);
         Task<ICollection<Policy>> GetManyByUserIdAsync(Guid userId);
+        Task<ICollection<Policy>> GetManyByTypeApplicableToUserIdAsync(Guid userId, PolicyType policyType,
+            OrganizationUserStatusType minStatus = OrganizationUserStatusType.Accepted);
+        Task<int> GetCountByTypeApplicableToUserIdAsync(Guid userId, PolicyType policyType,
+            OrganizationUserStatusType minStatus = OrganizationUserStatusType.Accepted);
     }
 }