Adds attributes to the first internal tag

syntax:syntax: {up attr | class=bg-yellow}< p>texte< /p>{/up attr}
{up attr | class=bg-yellow | tag=img}

< img src=image.jpg >

{/up attr}

🟩 upbtn-makefile PREFS.INI :
red-dot : class=ombreMax rotate3 mt3 p3 tc b bg-lightYellow | style=border:8px dotted red
img-red-circle : class=mcenter display-block rotate6 bd-rond ombreMax | style=border:4px dotted red | tag=img