I have a favicon.ico file how do I use this please.
Couldn't find documentation about it. Sure it can be done with resource.
You also may hard code it all:
Create a subfolder Images in your project root, then copy your icon file into it.
Add this icon file to the project (Shift+F11), and then open your main html file, usually index.html, comment other default favicon references, and add somewhere between <head> & </head>:
<link rel="icon" type="image/x-icon" href="/Images/youricon.ico">
TMS generates this in the projects main HTML:
<link rel="icon" href="data:;base64,=">
I suppose it's there for using favicon from a resource.
You must comment it in order to make the hard coding method work.
It also has <link $(FavIcon)/>. I also commented it.
Seems that you can configure it through a $FavIcon variable.
I can barely remember that in the past it was done just by copying favicon.ico to root folder. I really don't know if nowadays it would work on all browsers. Sorry, I'm a VCL guy! 
You'd add a reference to it to the project HTML file