Add a create instance button on the inspector of scripts that can generate a ScriptableObject

ScriptInspector.cs

using UnityEditor;
using UnityEngine;

// From https://www.youtube.com/watch?v=SyR4OYZpVqQ
[CustomEditor(typeof(MonoScript))]
public class ScriptInspector : Editor
{
	public override void OnInspectorGUI()
	{
		MonoScript monoScript = target as MonoScript;
		System.Type type = monoScript.GetClass();
		
		if (type != null &&
		    type.IsSubclassOf(typeof(ScriptableObject)) &&
		    !type.IsSubclassOf(typeof(UnityEditor.Editor)))
		{
			if (GUILayout.Button("Create Instance", GUILayout.Height(30)))
			{
				ScriptableObject asset = ScriptableObject.CreateInstance(type);
				string path = AssetDatabase.GenerateUniqueAssetPath("Assets/" + type.Name + ".asset");
				AssetDatabase.CreateAsset(asset, path);
				EditorGUIUtility.PingObject(asset);
			}
			GUILayout.Space(10);
		}

		GUILayout.Label(monoScript.text);
	}
}