added possibility to the ID of a user instead of a mention for a member parameter

abstracto-application/core/core-interface/src/main/java/dev/sheldan/abstracto/core/exception/MemberNotFoundException.java

@@ -0,0 +1,20 @@
+package dev.sheldan.abstracto.core.exception;
+
+import dev.sheldan.abstracto.templating.Templatable;
+
+public class MemberNotFoundException extends AbstractoRunTimeException implements Templatable {
+
+    public MemberNotFoundException() {
+        super("");
+    }
+
+    @Override
+    public String getTemplateName() {
+        return "member_not_found_exception";
+    }
+
+    @Override
+    public Object getTemplateModel() {
+        return new Object();
+    }
+}