File properties and ratio detection

- (Add) File formats properties:
   - `DisplayDiagonal`: Display diagonal size in millimeters
   - `DisplayDiagonalInches`: Display diagonal size in inches
   - `DisplayAspectRatio`: Display aspect ratio
- (Add) Detect incorrect image ratio upon file load and warn user about it

UVtools.WPF/Program.cs

@@ -2,7 +2,6 @@
 using System.Diagnostics;
 using System.Runtime.ExceptionServices;
 using Avalonia;
-using Emgu.CV;
 using UVtools.WPF.Extensions;
 
 namespace UVtools.WPF
@@ -20,7 +19,6 @@ namespace UVtools.WPF
         {
             ProgramStartupTime = Stopwatch.StartNew();
             Args = args;
-
             try
             {
                 if (ConsoleArguments.ParseArgs(args)) return;