Add missing classLoader setter

Author: pmendelski

src/main/java/com/coditory/quark/context/ContextBuilder.java

@@ -85,6 +85,14 @@ public ContextBuilder setEventBusExceptionHandler(@NotNull DispatchExceptionHand
         return this;
     }
 
+    @NotNull
+    public ContextBuilder setClassLoader(@NotNull ClassLoader classLoader) {
+        expectUninitialized();
+        expectNonNull(classLoader, "classLoader");
+        this.classLoader = classLoader;
+        return this;
+    }
+
     @NotNull
     public ContextBuilder registerConfigurationBeans() {
         return registerConfigurationBeans(true);