Adding new DatabaseConfig components in the Client project for supported Databases to avoid deploying server dlls to client

Oqtane.Shared/Interfaces/IDatabaseConfigControl.cs

@@ -0,0 +1,9 @@
+namespace Oqtane.Interfaces
+{
+    public interface IDatabaseConfigControl
+    {
+        string GetConnectionString();
+
+        bool IsInstaller { get; set; }
+    }
+}