✨(tokens) add breakpoints tokens

We need those to be able to make components responsive.

packages/tokens/src/bin/cunningham.ts

@@ -82,6 +82,15 @@ const transitions = {
   duration: "250ms",
 };
 
+const breakpoints = {
+  xs: 0,
+  sm: "576px",
+  md: "768px",
+  lg: "992px",
+  xl: "1200px",
+  xxl: "1400px",
+};
+
 const defaultTheme = {
   theme: {
     colors: {
@@ -101,6 +110,7 @@ const defaultTheme = {
     },
     spacings,
     transitions,
+    breakpoints,
   },
 };