Add unsend campaign feature (#45)

* Add unsend email editor

Add email editor

Add more email editor

Add renderer partial

Add more marketing email features

* Add more campaign feature

* Add variables

* Getting there

* campaign is there mfs

* Add migration

packages/email-editor/src/components/panels/LinkPreviewPanel.tsx

@@ -0,0 +1,33 @@
+import { Button } from "@unsend/ui/src/button";
+import { Edit2Icon, EditIcon, Trash2Icon } from "lucide-react";
+
+export type LinkPreviewPanelProps = {
+  url: string;
+  onEdit: () => void;
+  onClear: () => void;
+};
+
+export const LinkPreviewPanel = ({
+  onClear,
+  onEdit,
+  url,
+}: LinkPreviewPanelProps) => {
+  return (
+    <div className="flex items-center gap-2 p-2">
+      <a
+        href={url}
+        target="_blank"
+        rel="noopener noreferrer"
+        className="text-sm underline w-[12rem] overflow-hidden text-ellipsis"
+      >
+        {url}
+      </a>
+      <Button onClick={onEdit} variant="silent" size="sm" className="p-1">
+        <Edit2Icon className="h-4 w-4" />
+      </Button>
+      <Button onClick={onClear} variant="silent" size="sm" className="p-1">
+        <Trash2Icon className="h-4 w-4 text-destructive" />
+      </Button>
+    </div>
+  );
+};