Update TFM and references

[kingcean]

Summary

The major changes are about the WinUI 3 components library of DiffPlex (named DiffPlex.Windows).

• Add .NET 8/9 supports
• Update Windows App SDK references
• Add access key
• Update icon

Nuget package and binaries

• DiffPlex.Windows.1.2.0.zip

References

WinUI 3 components library, WPF components library and their demo projects now target latest .NET.

DiffPlex.Windows

TFM (.NET version)	Change state
net9.0-windows10.0.17763.0	Add
net9.0-windows10.0.19041.0	Add
net9.0-windows10.0.22000.0	Add
net9.0-windows10.0.22621.0	Add
net8.0-windows10.0.17763.0	Add
net8.0-windows10.0.19041.0	Add
net8.0-windows10.0.22000.0	Add
net8.0-windows10.0.22621.0	Add
net6.0-windows10.0.17763.0	Remove
net6.0-windows10.0.19041.0	Remove
net6.0-windows10.0.22000.0	Remove
net7.0-windows10.0.17763.0	Remove
net7.0-windows10.0.19041.0	Remove
net7.0-windows10.0.22000.0	Remove

The package version of Windows App SDK has been also up to date.

Windows App SDK	Change state
1.6.3 (241114003)	Add
1.4.3 (231115000)	Remove

DiffPlex.App

TFM (.NET version)	Change state
net9.0-windows10.0.19041.0	Add
net7.0-windows10.0.19041.0	Remove

DiffPlex.Wpf

TFM (.NET version)	Change state
net9.0-windows	Add
net8.0-windows	Add
net6.0-windows	Keep / Unchanged
net48	Keep / Unchanged
net46	Keep / Unchanged

DiffPlex.Wpf.Demo

TFM (.NET version)	Change state
net9.0-windows	Add
net8.0-windows	Add
net6.0-windows	Remove
net48	Keep / Unchanged
net46	Add

DiffPlex.WindowsFomrs.Demo

TFM (.NET version)	Change state
net8.0-windows	Add
net6.0-windows	Remove
net48	Add
net46	Keep / Unchanged

Updates

This PR comes out together with a little feature updates and fixes by the way.

Access key supports

Add hotkeys for app bar buttons, e.g. following table.

Command	Hotkey
Previous diff	Alt + P
Next diff	Alt + N
Go to line	Alt + G
View menu	Alt + V

Press Alt to see more.

Fixes

• Fix the warning about what default resource en-US is missed in DiffPlex.App
• Fix an issue that the lines after the last diff cannot be collapsed

Icon

The logo has updated with pure sense of design.

Design history and evolution

Version	Icon	Design description
v1 (old)		Abstract of a diff window
v2 (before this PR)		Simplify the concept and enable fluent design
v3 - candidate 1		Reconcile the colors - put the emphasis on theme color and fit it in the red and green bar
v3 - candidate 2		Simplify the colors - merge blue and green
v3 (final in this PR)		Unify the colors

Reality effect

The new icon in Start Menu, desktop and task bar looks like below.

Theme color

rgb(86, 156, 214)

Use the family (similar) color of #569cd6 as the theme of icon.
The color is the foreground (text color) of C# keyword (e.g. namespace and public sealed partial class) in dark mode in Visual Studio text editor.

[kingcean]

Hi @mmanela could you please help to have a look of the check failure (.NET SDK not found)?

[mmanela]

@kingcean You need to update .github/workflows/dotnet.yml to include or switch to dotnet9