Usability improvements

[piwonskp]

Warp could be more user-friendly. To achieve that a few things have to be done:

• [ ] #1011
• [x] #1050
• [ ] Keep Quickstart, links to documentation, contact us and unsupported features table in readme and remove other sections
• [x] #1029 https://github.com/NethermindEth/warp/pull/1008#issuecomment-1500263574