Update speaker list

[Msiusko]

Synchronize http://web3privacy.info/events/ speaker list (check Lu.ma for the full lineups) with existing display within https://web3privacy.info (speakers block):

• Check speaker list here
• Create Yaml: https://github.com/web3privacy/data/tree/main/src/people
• Add img: https://github.com/web3privacy/data/tree/main/src/people/_images

Please follow the strict format (check how other speaker's Yaml files are organized)

[niclaz]

Added Rome speakers (yaml and images)
Added Bangkok speaker (yaml only)

Included in #17