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/client/mesh/CustomMeshDefinitionWillGem.java

@@ -7,7 +7,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.util.ResourceLocation;
 import WayofTime.bloodmagic.api.soul.EnumDemonWillType;
 import WayofTime.bloodmagic.item.soul.ItemSoulGem;
-import WayofTime.bloodmagic.registry.RegistrarBloodMagicItems;
+import WayofTime.bloodmagic.core.RegistrarBloodMagicItems;
 
 public class CustomMeshDefinitionWillGem implements ItemMeshDefinition
 {