Feature/jest2 (#322)

* Adding more tests
* adding jest
* fixing tests
* fixing linting
* removing 1 slash less
* fixing more tests
* fixing last test
* more last fixes

test/files/correct/data_bp/entities/equippable.json

@@ -11,11 +11,7 @@
       "minecraft:equippable": {
         "slots": [
           {
-            "accepted_items": [
-              {
-                "tags": "query.any_tag('minecraft:is_tool')"
-              }
-            ],
+            "accepted_items": ["minecraft:tool"],
             "item": {
               "tags": "query.any_tag('minecraft:is_tool')"
             },