Extract Database to interface

PluralKit.Bot/Init.cs

@@ -21,7 +21,7 @@ namespace PluralKit.Bot
         {
             // Load configuration and run global init stuff
             var config = InitUtils.BuildConfiguration(args).Build();
-            Database.InitStatic();
+            InitUtils.InitStatic();
             
             // Set up DI container and modules
             var services = BuildContainer(config);