Add Lumenitos Scan feature into the Lab

[jeesunikim]

Add token functionality to lab

• Implement recent transfer events for account and pre-populate a list of balances based on them
• Also present sep41 metadata and recent transfers

Slack on Lumenito: https://stellarfoundation.slack.com/archives/C06KTGUULUF/p1766437263931959
Slack on displaying contract events: https://stellarfoundation.slack.com/archives/C06KTGUULUF/p1762983710342519