Add project files.

MareSynchronos/MareConfiguration/ConfigurationExtensions.cs

@@ -0,0 +1,13 @@
+using MareSynchronos.MareConfiguration.Configurations;
+
+namespace MareSynchronos.MareConfiguration;
+
+public static class ConfigurationExtensions
+{
+    public static bool HasValidSetup(this MareConfig configuration)
+    {
+        return configuration.AcceptedAgreement && configuration.InitialScanComplete
+                    && !string.IsNullOrEmpty(configuration.CacheFolder)
+                    && Directory.Exists(configuration.CacheFolder);
+    }
+}