refactor: separate out data structures into hoppscotch-data

packages/hoppscotch-app/components/lenses/HeadersRenderer.vue

@@ -42,7 +42,7 @@
 
 <script setup lang="ts">
 import { ref } from "@nuxtjs/composition-api"
-import { HoppRESTHeader } from "~/helpers/types/HoppRESTRequest"
+import { HoppRESTHeader } from "@hoppscotch/data"
 import { copyToClipboard } from "~/helpers/utils/clipboard"
 import { useI18n, useToast } from "~/helpers/utils/composables"