feat: move all css to includes dir

src/includes/css/utilities/fonts.css

@@ -0,0 +1,39 @@
+.font-size-s {
+  font-size: 0.8rem;
+}
+
+.font-size-m {
+  font-size: 1.125rem;
+}
+
+.font-size-l {
+  font-size: 1.5rem;
+}
+
+.font-size-xl {
+  font-size: 2rem;
+}
+
+.font-size-2xl {
+  font-size: 3rem;
+}
+
+.line-height-s {
+  line-height: 0.8rem;
+}
+
+.line-height-m {
+  line-height: 1.125rem;
+}
+
+.line-height-l {
+  line-height: 1.5rem;
+}
+
+.line-height-xl {
+  line-height: 2rem;
+}
+
+.text-skew {
+  transform: var(--text-skew);
+}