Breakpoint (#733)

* feat(breakpoint): add Breakpoint

* docs(breakpoint): update docs

* refactor(breakpoint): add prop descriptions, type slot

* docs: add missing semicolon to last typedef

* docs: decrease margin bottom for inline snippet

* docs: add Breakpoint to new components [ci skip]

* docs(config): use "scripts-markup-styles" for svelteSortOrder [ci skip]

* docs(breakpoint): label on:match event [ci skip]

src/index.js

@@ -1,6 +1,7 @@
 export { Accordion, AccordionItem, AccordionSkeleton } from "./Accordion";
 export { AspectRatio } from "./AspectRatio";
 export { Breadcrumb, BreadcrumbItem, BreadcrumbSkeleton } from "./Breadcrumb";
+export { Breakpoint } from "./Breakpoint";
 export { Button, ButtonSkeleton, ButtonSet } from "./Button";
 export { Checkbox, CheckboxSkeleton } from "./Checkbox";
 export { ContentSwitcher, Switch } from "./ContentSwitcher";