Simplify teal::init

[donyunardi]

Summary

The goal is to simplify the teal::init() function, which currently has too many arguments (e.g., header, footer, etc.). We aim to redesign the function to make it simpler while still allowing certain features or content to be added as needed.

Currently, we're aiming the init function to only have 4 arguments:

• data
• modules,
• filters,
• and possibly reporter.

Tasks

• Move landing popup feature back to the modules argument teal#1310
• [Feature Request]: Extend the header and footer for teal to include interactive elements teal#1429
• Assess id argument in init() teal#1438
• adding reporter to init()