refactor and moved normal resolver to library (forgot to commit this part last time).

RecrownedAthenaeum/ContentSystem/IContentPathResolver.cs

@@ -0,0 +1,15 @@
+namespace RecrownedAthenaeum.ContentSystem
+{
+    /// <summary>
+    /// Modifies the given path based on a name. Used to simplify long paths for the <see cref="ContentManagerController"/>
+    /// </summary>
+    public interface IContentPathResolver
+    {
+        /// <summary>
+        /// Returns the complete path with the content folder as root.
+        /// </summary>
+        /// <param name="contentPath">Is the asset's name</param>
+        /// <returns></returns>
+        string Modify(string contentPath);
+    }
+}