feat: Implement a new dashboard layout with sidebar, introduce project and data source management, and add various UI components.

app/dashboard/page.tsx

@@ -0,0 +1,17 @@
+export default function Page() {
+    return (
+        <div className="flex flex-1 flex-col gap-4 p-4 lg:p-8">
+            <div className="grid auto-rows-min gap-4 md:grid-cols-3">
+                <div className="aspect-video rounded-xl bg-muted/50" />
+                <div className="aspect-video rounded-xl bg-muted/50" />
+                <div className="aspect-video rounded-xl bg-muted/50" />
+            </div>
+            <div className="min-h-[100vh] flex-1 rounded-xl bg-muted/50" >
+                <div className="flex items-center justify-center h-full text-muted-foreground p-10 text-center">
+                    <h2 className="text-xl font-semibold">Your Leads will appear here</h2>
+                    <p>Select data sources in the sidebar to start finding opportunities dorked from the web.</p>
+                </div>
+            </div>
+        </div>
+    )
+}