More content browser stuff

- Seperate AssetHierarchy from EditorContentManager
- Make files selectable and context menu

GlitchyEngine/src/Extension/System/IO/Path.bf

@@ -0,0 +1,39 @@
+using System.Diagnostics;
+namespace System.IO;
+
+extension Path
+{
+	/// Opens the file browser and selects the specified file.
+	/// @param path The path of the file to select.
+	public static void OpenFolderAndSelectItem(String path)
+	{
+		String fullPath = scope String(256);
+		Path.GetFullPath(path, fullPath);
+
+#if BF_PLATFORM_WINDOWS
+		ProcessStartInfo processInfo = scope .();
+		processInfo.SetFileNameAndArguments(scope $"explorer /select,\"{fullPath}\"");
+
+		scope SpawnedProcess().Start(processInfo);
+#else
+		Runtime.NotImplemented();
+#endif
+	}
+
+	/// Opens the file browser in the given directory.
+	/// @param directory The directory to show in the file browser.
+	public static void OpenFolder(String directory)
+	{
+		String fullPath = scope String(256);
+		Path.GetFullPath(directory, fullPath);
+
+#if BF_PLATFORM_WINDOWS
+		ProcessStartInfo processInfo = scope .();
+		processInfo.SetFileNameAndArguments(scope $"explorer \"{fullPath}\"");
+
+		scope SpawnedProcess().Start(processInfo);
+#else
+		Runtime.NotImplemented();
+#endif
+	}
+}