Add ResourceNotFoundException class for improved error handling

Author: dmitryesin

solver-common/src/main/java/com/solver/ResourceNotFoundException.java

@@ -0,0 +1,11 @@
+package com.solver;
+
+public class ResourceNotFoundException extends RuntimeException {
+    public ResourceNotFoundException(String message) {
+        super(message);
+    }
+
+    public ResourceNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}