V2 fix warnings

[tig]

Fixes

• Fixes a bunch of build warnings

Pull Request checklist:

• I've named my PR in the form of "Fixes #issue. Terse description."
• My code follows the style guidelines of Terminal.Gui - if you use Visual Studio, hit CTRL-K-D to automatically reformat your files before committing.
• My code follows the Terminal.Gui library design guidelines
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[BDisp]

@tig it's only a question. Should the Application.Name should be concise with others, like ApplicationNavigation and ApplicationOverlapped?

[tig]

@tig it's only a question. Should the Application.Name should be concise with others, like ApplicationNavigation and ApplicationOverlapped?

ApplicaitonNavigation and ApplicationOverlapped are classes.

[dodexahedron]

🙏

Yay.

We'll have a bunch more to address later on, too, as we should turn up the analysis to a higher level before release.

IMO, beta is a good time for that.