Update user journey map for Gardens

[0xGabi]

We still have an outdated user journey map. Would be great to update it to share the latest discussions and ideas.

Link to current site map: https://www.figma.com/file/cie2wktAN0cB46Sau61chP/Gardens-🧑%E2%80%8D🌾

[Chimdalu-Ofoegbu]

Hello, @0xGabi I'm kinda open to taking this up. Would have to study the sitemap though, and the current one too