Add UX for marking water exclusion surfaces

[Geenz]

Add a checkbox in the Build floater, Texture tab, to mark a surface as a water exclusion surface. Water exclusion surfaces may be applied to faces due to us using the old invisiprim params.

Location and label of the checkbox are shown in the drawing.

• All other texture settings are functionally ignored when "Hide water" is checked. Those settings are disabled (grayed out).
• Using "Hide water" is not destructive to the other texture settings. Checking "Hide water" and then unchecking it is a no-op. All values are preserved.
• Copy/Paste clipboard button does not need to include the "Hide Water" bit.

Test Plan

• When this box is checked, the surface should start excluding water.
• When this box is unchecked, the surface should resemble a default plywood surface (or some other default surface parameters).

[Geenz]

@Steeltoe-Linden Correction on making this non-destructive:
Hide water, due to how it works (using the old invisiprim mechanism), makes this impossible.

The parameters this impacts are:

• Selected diffuse texture
• Legacy bump/shine parameters

I'd advise the following instead when toggled on and off:

• Set the diffuse texture to a sane default (plywood?)
• Set bump/shiny to off

[Steeltoe-Linden]

@Geenz Then the first time the user checks the box for hiding water, issue a warning dialog "Checking the hide water box will overwrite the texture, bumpiness, and shininess choices. [Continue] [Cancel]". The values you propose for when the user turns hide-water off again sound great.

[maxim-productengine]

Here's info about UI behavior:

• Checkbox is disabled if selected face has pbr material or media;
• Confirmation dialog appears when user checks the box;
• When the box is checked, all other controls are disabled.