feat: implements many serializers for ItemBase relates

[boscohyun]

Background

We need to declare how the ItemBase related types to deserialize from BsonDocument to object of specific type.

Changes

• Implements default constructors and apply BsonIgnore attribute to Bencoded properties to all of types in the Lib9c.Models namespace.
• Implements or improve Json converters:
  • BigIntegerJsonConverter
  • MaterialAndIntDictionaryJsonConverter
• Implements and register IBsonSerializers of all ItemBase relates types.
• Handle exceptions in CombinationSlotStateHandler.
• Upgrade package versions.
• Refactor ItemFactory.Create(), MongoDbService.
• Code clean up:
  • Remove Mimir.Factories.StatMapFactory.

[CLAassistant]

All committers have signed the CLA.