Fixed Crafting Station Placeholder Condition

- `=`s cannot be used as comparators. Instead replace them with a `+`
For example, `placeholder{placeholder=%mmocore_profession_mining%~<+~20}` is less than or equal to
`placeholder{placeholder=%mmocore_profession_mining%~+~20}` is equal to

If using `+` gives you incorrect results when attempting to see if something is equal (Says that it is not equal, even though it is), use `equals` instead. Greater than or equal to & Less than or equal to, should NOT have incorrect results, only direct `+` equal to comparisons may.

So if `placeholder{placeholder=%mmocore_profession_mining%~++~20}` result is incorrect, then use `placeholder{placeholder=%mmocore_profession_mining%~equals~20}` instead.

src/main/java/net/Indyuce/mmoitems/api/crafting/condition/PlaceholderCondition.java

@@ -27,16 +27,16 @@ public class PlaceholderCondition extends Condition {
 		switch (comparator) {
 			case "<":
 				return Double.valueOf(placeholders) < Double.valueOf(compareTo);
-			case "<=":
+			case "<+":
 				return Double.valueOf(placeholders) <= Double.valueOf(compareTo);
 			case ">":
 				return Double.valueOf(placeholders) > Double.valueOf(compareTo);
-			case ">=":
+			case ">+":
 				return Double.valueOf(placeholders) >= Double.valueOf(compareTo);
-			case "==":
-			case "=":
+			case "++":
+			case "+":
 				return Double.valueOf(placeholders) == Double.valueOf(compareTo);
-			case "!=":
+			case "!+":
 				return Double.valueOf(placeholders) != Double.valueOf(compareTo);
 			case "equals":
 				return placeholders.equals(compareTo);