Integrate MongoDB into an ABP application: AbpMongoDbContext, collection mapping, AddMongoDbContext registration, and custom Mongo repositories. USE FOR: defining an AbpMongoDbContext, mapping collections with [MongoCollection]/CreateModel, registering via AddMongoDbContext, wiring AddDefaultRepositories/AddRepository, writing custom MongoDbRepository classes, reaching the DbContext via IMongoDbContextProvider, using GetCollectionAsync/GetAggregateAsync. DO NOT USE FOR: consuming standard IRepository methods (use-abp-repositories); Entity Framework Core integration, DbContext model builder, or code-first migrations (use ef-core-integration); controlling transaction/UOW bo…
