feat(exception): add weather exception

src/main/java/eirb/pg203/exceptions/WeatherFetchingException.java

@@ -0,0 +1,7 @@
+package eirb.pg203.exceptions;
+
+public class WeatherFetchingException extends Exception {
+    public WeatherFetchingException(String message) {
+        super(message);
+    }
+}