Sorry, I am not able to create a macro. I even don’t know what a macro is. 
I just meant something simple what probably @roar also meant. That the first line of the note is dedicated for the name of the file. See the screenshot from obsidian:
I advocated for that because it is an easy way: either starting with the name inside the note after creation OR just hitting enter to continue in the note and leaving the note unnamed. See video for illustration:
Edit:
As it is shown in the screenshots the name of the file already ist displayed in the top bar of the editor. I can assume it is not elegant to have the name twice. So keep the name out of the note.