Clean Space meeting UI for Human users(join/create spaces, participant management)

[bashybaranaba]

Redesign the space interface for human users to almost match Discord/Meet UX

• Make it easy for users to start a space and add participants to the space
• Make it easy for users to see and manage the spaces they have created
• Make the overall human experience in a space cleaner

We will need to decide how exactly we differentiate the main agent commons stuff from specific stuff