fonts: add Public Sans (#77707)

README

@@ -430,6 +430,13 @@ copyright notices:
   #
   # https://www.fontsquirrel.com/license/butler
 
+* Public Sans
+  # Copyright (c) 2015 Impallari Type (www.impallari.com), with Reserved Font Name “Public Sans”
+  #
+  # This Font Software is licensed under the SIL Open Font License, Version 1.1.
+  #
+  # https://www.fontsquirrel.com/license/public-sans
+
 ~~~~
 
 Some theme variant files have their own specific licenses; refer to

static/includes/fonts/_publicsans.scss

@@ -0,0 +1,25 @@
+$publicsans-font-path: '/static/fonts/PublicSans' !default;
+
+@mixin publicsans-font($type, $weight, $style: normal) {
+    @font-face {
+        font-family: 'Public Sans';
+        src: url('#{$publicsans-font-path}/PublicSans-#{$type}.woff2') format('woff2');
+        font-weight: $weight;
+        font-style: $style;
+    }
+}
+
+@mixin publicsans-font-pair($type, $weight) {
+    @include publicsans-font($type, $weight);
+    @include publicsans-font(#{$type}Italic, $weight, italic);
+}
+
+@include publicsans-font-pair('Thin', 100);
+@include publicsans-font-pair('ExtraLight', 200);
+@include publicsans-font-pair('Light', 300);
+@include publicsans-font-pair('Regular', 400);
+@include publicsans-font-pair('Medium', 500);
+@include publicsans-font-pair('SemiBold', 600);
+@include publicsans-font-pair('Bold', 700);
+@include publicsans-font-pair('ExtraBold', 800);
+@include publicsans-font-pair('Black', 900);