docs: add development disclaimer to README (#388)

* docs: add development disclaimer to README

Co-Authored-By: 0xKitsune <[email protected]>

* docs: revert disclaimer back to WARNING

Co-Authored-By: 0xKitsune <[email protected]>

* docs: use NOTE for readme disclaimer

Co-Authored-By: 0xKitsune <[email protected]>

* docs: move disclaimer above banner

Co-Authored-By: 0xKitsune <[email protected]>

---------

Co-authored-by: 0xKitsune <[email protected]>

Author: decofe

README.md

@@ -1,3 +1,7 @@
+> [!NOTE]
+> This repository is actively under development and subject to rapid iteration.
+> APIs, interfaces, and behavior may change without notice. Not recommended for production use yet.
+
 <p align="center">
   <a href="https://tempo.xyz/zones">
     <img src="assets/header.png" alt="Tempo Zones" width="100%">