add tooltip stuff

[deploy]

src/lib/tooltip.ts

@@ -0,0 +1,13 @@
+import type {Action} from "svelte/action"
+import tippy from "tippy.js"
+import type {Props} from "tippy.js"
+
+export const tooltip: Action = function (node, props?: Partial<Props>) {
+  const instance = tippy(node, props)
+
+  return {
+    destroy() {
+      instance.destroy()
+    },
+  }
+}