[BUG] Tree Tent puzzle editor does not work

[charlestian23]

Description

Despite being one of the puzzles that is marked as completed, Tree Tent does not fully function in the puzzle editor. Some functions are just not implemented.

Steps to Reproduce

1. Open LEGUP
2. Click on "Create Puzzle"
3. Select Tree Tent and give any valid dimensions
4. Attempt to create a puzzle and notice that it does not work

Expected Behavior

The Tree Tent puzzle editor should work as intended, just like Nurikabe.

Screenshots

No response

Puzzle Files

No response

Additional Context

This issue is intended to be worked on by multiple people, who can reference Nurikabe for how to finish implementing the Tree Tent puzzle editor.

[jac-oblong]

fixed by #692