Highlighting 'waku is not production ready'

Added an announcement bar that reflects the fact that existing waku network can't be used for production apps nor mission critical systems (involving economical value)

docusaurus.config.js

@@ -59,6 +59,14 @@ const config = {
             label: 'JavaScript (Browser)',
           },
         ],
+      },
+        announcementBar: {
+        id: "support_us",
+        content:
+          "Waku is not production ready yet. Join our <a href='https://discord.gg/Nrac59MfSX'>discord community</a> to stay updated.",
+        backgroundColor: "#EBEDF0",
+        textColor: "#1B1B1D",
+        isCloseable: true,
       },
       footer: {
         links: [