Fix: Add missing .meta files to Hololens application

[robynlovettms]

Purpose

Unity .meta files required for using the Hololens project were previously excluded. Without these, the project can be opened but asset and script references are broken.
This PR restores those files, resolving the issue.

• ...

Does this introduce a breaking change?

[ ] Yes
[X ] No

Pull Request Type

What kind of change does this Pull Request introduce?

[X ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

What to Check

Verify that the following are valid

• Unity project asset references are intact.
• Objects in existing scenes appear normal, and not bright pink
• Scene hierarchy shows prefabs normally, not "(Missing Prefab)"

[ghost]

All CLA requirements met.