Implement workflows tab, workflow runs view, ability to run workflows from UI (#582)

Co-authored-by: Muhammed Salih Altun <muhammedsalihaltun@gmail.com>

skyvern-frontend/src/routes/workflows/WorkflowsBetaAlertCard.tsx

@@ -0,0 +1,37 @@
+import { Button } from "@/components/ui/button";
+
+function WorkflowsBetaAlertCard() {
+  return (
+    <div className="shadow rounded-lg bg-slate-900 flex flex-col items-center p-4">
+      <header>
+        <h1 className="text-3xl py-4">Workflows (Beta)</h1>
+      </header>
+      <div>Workflows through UI are currently under construction.</div>
+      <div>
+        Today, you can create and run workflows through the Skyvern API.
+      </div>
+      <div className="flex gap-4 py-4">
+        <Button asChild>
+          <a
+            href="https://docs.skyvern.com/workflows/creating-workflows"
+            target="_blank"
+            rel="noopener noreferrer"
+          >
+            See the workflow docs
+          </a>
+        </Button>
+        <Button asChild>
+          <a
+            href="https://meetings.hubspot.com/suchintan"
+            target="_blank"
+            rel="noopener noreferrer"
+          >
+            Book a demo
+          </a>
+        </Button>
+      </div>
+    </div>
+  );
+}
+
+export { WorkflowsBetaAlertCard };