Dev Docs Landing Page

[gregsantos]

This task relates to creating the frontend redo for the developer docs landing page https://www.figma.com/file/EyyYFkfXj02nOsJGrAMBz8/Flow-Dev-Portal---2023-Revamp?type=design&node-id=187-16813&mode=design&t=KYceAXS4YZmkpR9p-0

Stage 1:

Replace existing Developer Landing Page with

Update Build with Flow intro section

• Add on hover effect for Read Docs button that makes button darker green and hover up-down animation transition.
• Use text and assets from landing page.