Simple tool for importing editor layout files (.wlt files) from the asset folder. this is cool cos you can then share layouts with your team via source control

LayoutUtils.cs

// put me in an Editor folder
using System.IO;
using UnityEditor;
using UnityEditorInternal;
using UnityEngine;

public static class LayoutUtils
{
    // unity stores layouts in a path referenced in WindowLayout.LayoutsPreferencesPath.
    // Unfortunately, thats internal - well just creat the path in the same way they do!
    // github.com/Unity-Technologies/UnityCsReference/blob/master/Editor/Mono/GUI/WindowLayout.cs#L980
    static string layoutsPreferencesPath => Path.Combine(InternalEditorUtility.unityPreferencesFolder, "Layouts");
    
    [MenuItem("Assets/Import Editor Layout", priority = 10000)]
    static void ImportEditorLayout()
    {
        Debug.Log("Attempting to import layout: " + Selection.activeObject.name);
        
         // install the layout file by copying it to the layout folder
         string sourcePath = AssetDatabase.GetAssetPath(Selection.activeObject);
         // https://github.com/Unity-Technologies/UnityCsReference/blob/master/Editor/Mono/GUI/WindowLayout.cs#L1088
         string destinationPath = Path.Combine(layoutsPreferencesPath, Selection.activeObject.name + ".wlt");
         File.Copy(sourcePath, destinationPath, true);
         
         // instruct unity to reload layouts
         InternalEditorUtility.ReloadWindowLayoutMenu();
    }

    [MenuItem("Assets/Import Editor Layout", priority = 10000, validate = true)]
    static bool ValidateImportEditorLayout()
    {
        // we only work on a single selected asset...
        if (Selection.objects.Length != 1)
            return false;

        // lets check if the asset is a layout file
        string path = AssetDatabase.GetAssetPath(Selection.activeObject);
        return path.EndsWith(".wlt");
    }
        
    [MenuItem("Window/Open Editor Layouts folder", priority = 10000)]
    static void OpenlayoutsFolder()
    {
        Debug.Log("Attempting to import layout: " + Selection.activeObject.name);
        
        EditorUtility.RevealInFinder(layoutsPreferencesPath+"/default");
    }
}