V1.0.1

Small patch: Treat empty "-" as argument, not flag.

Change Release folder structure: Remove net7.0 sub-directory and move its contents up to root folder, change file name from Release.zip to dnSpy-Theme-Installer-net7.0.zip (much better name!).

dnSpyThemeInstaller V1.0

First Release! Thoroughly tested with empirical observation.

Only for .NET 7.0 Framework
Cross-platform (I think, hasn't been tested)