feat(font size utilities): add import file with utilities ready to ex…

…pose

scss/core/tools/mixins/utilities/_font-sizes.scss

@@ -23,6 +23,8 @@
 @mixin u-fs--h5 { font-size: px-to-rem($fs-h5);}
 @mixin u-fs--h6 { font-size: px-to-rem($fs-h6);}
 
+@mixin u-fs--base { font-size: px-to-rem($fs-base);}
+
 /**
  * A series of classes for setting tiny type; for use in smallprint etc.
  */
@@ -42,6 +44,8 @@
   .u-fs--h5 { @include u-fs--h5;}
   .u-fs--h6 { @include u-fs--h6;}
 
+  .u-fs--base { @include u-fs--base;}
+
   .u-fs--milli { @include u-fs--milli;}
   .u-fs--micro { @include u-fs--micro;}
   .u-fs--nano	 { @include u-fs--nano;}

scss/custom/app/utilities/typography/_font-size.scss

@@ -0,0 +1,15 @@
+/*------------------------------------*\
+    FONT SIZE UTILITIES
+\*------------------------------------*/
+//.u-fs--h1    { @include u-fs--h1;}
+//.u-fs--h2    { @include u-fs--h2;}
+//.u-fs--h3    { @include u-fs--h3;}
+//.u-fs--h4    { @include u-fs--h4;}
+//.u-fs--h5    { @include u-fs--h5;}
+//.u-fs--h6    { @include u-fs--h6;}
+
+//.u-fs--base  { @include u-fs--base;}
+
+//.u-fs--milli { @include u-fs--milli;}
+//.u-fs--micro { @include u-fs--micro;}
+//.u-fs--nano  { @include u-fs--nano;}

scss/custom/app/utilities/typography/_index.scss

@@ -4,3 +4,4 @@
 @import 'alignment';
 @import 'colors';
 @import 'font-family';
+@import 'font-size';