GrandMail

Updated for Dragonflight expansion

- Code rewrite of the whole thing.

- Removed glyph and battle pet filters.

- Added a faction icon to characters.

- All characters now show up on a realm, no matter what faction they're in.

- General minor improvements across the board.

- The name filter now only requires you to left-click on the item in your bag (or type it if you don't have it on you).

- Attempt at localization.