feat: added delay flag in @hoppscotch/cli and related tests (#2527)

Co-authored-by: Andrew Bastin <andrewbastin.k@gmail.com>

packages/hoppscotch-cli/src/index.ts

@@ -50,6 +50,10 @@ program
     "path to a hoppscotch collection.json file for CI testing"
   )
   .option("-e, --env <file_path>", "path to an environment variables json file")
+  .option(
+    "-d, --delay <delay_in_ms>",
+    "delay in milliseconds(ms) between consecutive requests within a collection"
+  )
   .allowExcessArguments(false)
   .allowUnknownOption(false)
   .description("running hoppscotch collection.json file")