[Developer Tools] Port the Message Viewer from SoH to 2Ship

[SuperBro64]

The Message Viewer in SoH is in my opinion very useful for immediately testing out in-game any text edits you've made, without having to go to a text ID's original location. Porting the Message Viewer over to 2Ship would therefore be similarly helpful, as text editing in 2Ship as of now isn't easy but still possible. Just a suggestion!

The Message Viewer in SoH does have some bugs that I've previously pointed out (HarbourMasters/Shipwright#4024), so those may or may not need to be addressed first before bringing it over to 2Ship.