exclude logs from 7z

Makefile

@@ -3,7 +3,7 @@
 build:
 	mkdir -p dist
 	rm -f dist/WinImager.7z
-	7z a dist/WinImager.7z WinImager
+	7z a dist/WinImager.7z WinImager -xr0!*.log
 	cat sfx/7zsd_All_x64.sfx  sfx/sfx_config.txt dist/WinImager.7z > dist/WinImager.exe
 
 run: