[React][Crypto][Cosmos][KEPRL] Introduce a new stake landing page

Hello.

Please see: https://docs.google.com/document/d/18zoYxxBDfVGDrwwFrHNnGlBW9oKXYcjI0a2gQNqsow0/edit#heading=h.puzplulcdxoc this is the spces let me know if there is any sort of question and your quote / timeframe for this.

Thank you