feat(customers): add initial admin bootstrap and csv import

frontend/athena/app/api/customers/import/commit/route.ts

@@ -0,0 +1,14 @@
+import { NextRequest } from "next/server";
+
+import { assertSameOrigin } from "@/lib/server/request-guards";
+import { proxyHermesRequest } from "@/lib/server/hermes-proxy";
+
+export async function POST(request: NextRequest) {
+  const originError = assertSameOrigin(request);
+
+  if (originError) {
+    return originError;
+  }
+
+  return proxyHermesRequest(request, "/customers/import/commit");
+}