docs: add footer disclaim

docs/style.css

@@ -46,3 +46,9 @@
         display: none;
     }
 }
+
+footer {
+  text-align: center;
+  padding: 3px;
+  font-size: 0.7em;
+}

docs/theme/index.hbs

@@ -241,6 +241,15 @@
                 {{/next}}
             </nav>
 
+        <footer>
+          <div>
+            <p> Apache HoraeDB is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF. </p>
+            <p>
+              Copyright © 2024 The Apache Software Foundation, Licensed under the Apache License, Version 2.0. <br/>
+              Apache, the names of Apache projects, and the feather logo are either registered trademarks or trademarks of the Apache Software Foundation in the United States and/or other countries.
+            </p>
+          </div>
+        </footer>
         </div>
 
         {{#if live_reload_endpoint}}
@@ -404,6 +413,5 @@
         })();
         </script>
 
-
     </body>
 </html>