Toggle Unity Inspector between Debug and Normal.

DebugToggle.cs

/// Debug Toggle by Chance Millar 18/11/18

using System;
using System.Reflection;
using UnityEditor;

// Used to provide a shortcut for toggling Unity's Debug/Normal mode on the inspector.
// Place inside a folder named "Editor" for Unity to compile correctly.
// Will only work on a single inspector window, not all of them.
// Use Ctrl/Cmd+G to activate. Refer to the Shortcut manager to change the shortcut.
// Will break if Unity changes their API.
public class DebugToggle
{
    private static readonly Assembly kAssembly = Assembly.GetAssembly( typeof(EditorWindow) );
    private static readonly Type kInspectorWindow = kAssembly.GetType( "UnityEditor.InspectorWindow" );
    private static readonly PropertyInfo kInspectorMode = kInspectorWindow.GetProperty("inspectorMode");
    private static readonly MethodInfo kInspectorModeSet = kInspectorMode.GetSetMethod();
    private static readonly MethodInfo kInspectorModeGet = kInspectorMode.GetGetMethod();

    [MenuItem("Edit/Toggle Debug %g")]
    public static void ToggleInspectorDebug()
    {
        EditorWindow window = EditorWindow.GetWindow( kInspectorWindow );
        InspectorMode mode = (InspectorMode)kInspectorModeGet.Invoke(window, null);
        InspectorMode swap = (InspectorMode)(1-(int)mode);
        kInspectorModeSet.Invoke( window, new object[] { swap } );
    }
}