Remove excessive NativeGridPanel height if GridStyle is Row

[tomilovsenya]

NativeGridPanel has a constant height of 270px which seems excessive when GridStyle is set to Row. I made a little condition that makes NativeGridPanel only 60px tall for GridStyle.Row to suit my mod, and I think this is how it needs to be in LemonUI by default.

Optionally, we could allow to change height of NativeGridPanel.

[justalemon]

There is a lot wrong here, mainly:

• The csproj for ScriptHookVDotNet 3 is gone
• It's more than one fix/feature per Pull Request

[tomilovsenya]

Oh, pushed newer commits accidentally, there was just one originally. I'll make a proper one later.