Add tooltip description to PhantomCamera properties

[ramokz]

The Problem

All the properties in PhantomCamera classes currently don't have any descriptions for what they do. So the only way to know what each property does is by looking at the wiki documentation, the source code or trial and error.

Proposed Solution

Add a description to each property that explains what each does.

[BenjaTK]

I could do this if it's needed.

[ramokz]

That would be great!

I chucked this into the backlog since I couldn't figure out a way to add descriptions to properties defined using _get_property_list(), not to mention those added from the Properties file, but hadn't spent too long looking into this.

Long term, was thinking of updating the properties to use the new _validate_property approach added in Godot 4.2.

[BenjaTK]

Hmm. Yeah, I don't think you can do it with _get_property_list. It would work if the variables were in the PhantomCameras scripts and we added documentation comments but since they're in a separate script I'm not sure if it's possible.

[ramokz]

That's fine! Will revisit this once the properties get converted down the line.

[ramokz]

Closing as it ended up effectively being a duplication of #168