Add IEQ support

src/main/java/com/avaje/ebeaninternal/server/grammer/EqlAdapterHelper.java

@@ -46,6 +46,9 @@ class EqlAdapterHelper {
       case EQ:
         peekExprList().eq(path, bind(value));
         break;
+      case IEQ:
+        peekExprList().ieq(path, bindString(value));
+        break;
       case NE:
         peekExprList().ne(path, bind(value));
         break;

src/main/java/com/avaje/ebeaninternal/server/grammer/EqlOperator.java

@@ -3,6 +3,7 @@ package com.avaje.ebeaninternal.server.grammer;
 enum EqlOperator {
 
   EQ,
+  IEQ,
   NE,
   LT,
   LTE,

src/main/java/com/avaje/ebeaninternal/server/grammer/OperatorMapping.java

@@ -10,6 +10,7 @@ class OperatorMapping {
   public OperatorMapping() {
     map.put("eq", EqlOperator.EQ);
     map.put("=", EqlOperator.EQ);
+    map.put("ieq", EqlOperator.IEQ);
 
     map.put("ne", EqlOperator.NE);
     map.put("<>", EqlOperator.NE);