Move commonly used API systems to a plugin based system

Create a class that implements IBloodMagicPlugin and annotate it with
`@BloodMagicPlugin`. The `register` method will be called during init.

Currently implemented systems:
- Blacklisting
  - Teleposer
  - Teleposer (entity)
  - Transposition
  - Well of Suffering
  - Green Grove
- Setting sacrificial values
- Adding altar components

src/main/java/WayofTime/bloodmagic/item/ItemBoundSword.java

@@ -35,7 +35,7 @@ import WayofTime.bloodmagic.api.util.helper.NBTHelper;
 import WayofTime.bloodmagic.api.util.helper.PlayerHelper;
 import WayofTime.bloodmagic.client.IMeshProvider;
 import WayofTime.bloodmagic.client.mesh.CustomMeshDefinitionActivatable;
-import WayofTime.bloodmagic.registry.RegistrarBloodMagicItems;
+import WayofTime.bloodmagic.core.RegistrarBloodMagicItems;
 import WayofTime.bloodmagic.util.helper.TextHelper;
 
 import com.google.common.base.Strings;