feat(item sheets): add max height

[stanavdb]

Type

• Bug fix
• Feature
• Refactor
• Other (please describe):

Description
This PR gives item sheets a max height. This makes it so that items with a lot of options (like weapons) don't take up the entire screen height.

Related Issue
Closes #92

How Has This Been Tested?
Opened an Item of each type and navigated to the details tab to verify the max height was applied properly (where needed).

Screenshots (if applicable)

Checklist:

• I have commented on my code, particularly in hard-to-understand areas. (Not relevant)
• My changes do not introduce any new warnings or errors.
• My PR does not contain any copyrighted works that I do not have permission to use.
• I have tested my changes on Foundry VTT version: 12.331.