Add imbuement altar

- Adds imbuement altar block and associated tile entity
- Adds basic functionality for imbuing wizard armour (other stuff to be decided)
- Incorporates imbuement altar into glowing overlay model event (this could do with being tidied up and generalised)
- Adds a TESR for the ray effect (based on some of the oldest code in the entire mod, which definitely needs improving!)
- Adds a simple sound effect for the imbuement process, needs upgrading to a ticked sound later

src/main/resources/assets/ebwizardry/blockstates/imbuement_altar.json

@@ -0,0 +1,7 @@
+{
+	"forge_marker": 1,
+    "variants": {
+        "active=false": { "model": "ebwizardry:imbuement_altar_inactive" },
+        "active=true": { "model": "ebwizardry:imbuement_altar" }
+    }
+}