feat: add timestamp to iso

src/lib/utils/index.ts

@@ -1 +1,2 @@
 export * from './convert-enum.util'
+export * from './timestamp-to-iso.util'

src/lib/utils/timestamp-to-iso.util.ts

@@ -0,0 +1,5 @@
+import { Timestamp } from '@teacinema/contracts/gen/ts/google/protobuf/timestamp'
+
+export function timestampToISO(ts: Timestamp) {
+  new Date(ts.seconds * 1000 + ts.nanos / 1_000_000).toISOString()
+}