[ADD] extensions: icon_role font awesome

closes odoo/documentation#9059

X-original-commit: 8bec283166
Signed-off-by: Samuel Lieber (sali) <sali@odoo.com>

extensions/odoo_theme/static/scss/_typography.scss

@@ -15,6 +15,13 @@
   font-style: normal;
   font-display: block;
 }
+@font-face {
+  font-family: 'FontAwesome';
+  src: url('fonts/fontawesome-webfont.woff2?v=4.7.0') format('woff2'), url('fonts/fontawesome-webfont.woff?v=4.7.0') format('woff');
+  font-weight: normal;
+  font-style: normal;
+  font-display: block;
+}
 
 html body{
     -webkit-font-smoothing: antialiased;