Gives the option to always save 'null' to the 'team_id' column

[moedayraki]

Gives the option in the configuration to always save the team_id as null in order for people to see all logged emails and not filter them by teams. (This works perfectly for admin)

[what-the-diff]

🌈 PR Summary

• Beautiful Upgrade to README.md 😺
  We slid in a fancy new option named 'persist_team_id' => true, which gives you a magical power to decide whether you want to remember the team IDs or not.

• Sprinkled some Magic in config/filament-email.php ✨
  Stirred up 'persist_team_id' => true into filament-email's recipe! Now you can decide how you want your filament emails cooked. Want to keep team IDs in it? You got it!

• Savvy Swaps in FilamentEmailLogger.php 🔍🔁

  • Swapped out the boring direct access of Filament::getTenant()?->id with a shiny new private method getTeamId(). Think of it as a cool helper which fetches your team ID based on your choice of persist_team_id.
  • Upgraded the way our models are created to use our wonderful helper, getTeamId() for setting the 'team_id'.
  • Brought in a super cool helper named getTeamId(). Like a loyal knight, it returns the team ID when persist_team_id is true; otherwise, it cools down and returns null.