feat: add get started free badge (#47503)

![CleanShot 2024-09-05 at 13 16
03@2x](https://github.com/user-attachments/assets/40cc7578-ed1f-4628-bcb5-8999b092e986)

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Signed-off-by: Saihajpreet Singh <c-saihajpreet.singh@anyscale.com>
Signed-off-by: Saihajpreet Singh <saihajpreet.singh@gmail.com>

README.rst

@@ -12,6 +12,9 @@
 .. image:: https://img.shields.io/twitter/follow/raydistributed.svg?style=social&logo=twitter
     :target: https://twitter.com/raydistributed
 
+.. image:: https://img.shields.io/badge/Get_started_for_free-3C8AE9?logo=data%3Aimage%2Fpng%3Bbase64%2CiVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8%2F9hAAAAAXNSR0IArs4c6QAAAERlWElmTU0AKgAAAAgAAYdpAAQAAAABAAAAGgAAAAAAA6ABAAMAAAABAAEAAKACAAQAAAABAAAAEKADAAQAAAABAAAAEAAAAAA0VXHyAAABKElEQVQ4Ea2TvWoCQRRGnWCVWChIIlikC9hpJdikSbGgaONbpAoY8gKBdAGfwkfwKQypLQ1sEGyMYhN1Pd%2B6A8PqwBZeOHt%2FvsvMnd3ZXBRFPQjBZ9K6OY8ZxF%2B0IYw9PW3qz8aY6lk92bZ%2BVqSI3oC9T7%2FyCVnrF1ngj93us%2B540sf5BrCDfw9b6jJ5lx%2FyjtGKBBXc3cnqx0INN4ImbI%2Bl%2BPnI8zWfFEr4chLLrWHCp9OO9j19Kbc91HX0zzzBO8EbLK2Iv4ZvNO3is3h6jb%2BCwO0iL8AaWqB7ILPTxq3kDypqvBuYuwswqo6wgYJbT8XxBPZ8KS1TepkFdC79TAHHce%2F7LbVioi3wEfTpmeKtPRGEeoldSP%2FOeoEftpP4BRbgXrYZefsAI%2BP9JU7ImyEAAAAASUVORK5CYII%3D
+   :target: https://console.anyscale.com/register/ha?utm_source=github&utm_medium=ray_readme&utm_campaign=get_started_badge
+
 Ray is a unified framework for scaling AI and Python applications. Ray consists of a core distributed runtime and a set of AI libraries for simplifying ML compute:
 
 .. image:: https://github.com/ray-project/ray/raw/master/doc/source/images/what-is-ray-padded.svg