feat: item-attachments CRUD (#22)

* change /content/ -> /homebox/

* add cache to code generators

* update env variables to set data storage

* update env variables

* set env variables in prod container

* implement attachment post route (WIP)

* get attachment endpoint

* attachment download

* implement string utilities lib

* implement generic drop zone

* use explicit truncate

* remove clean dir

* drop strings composable for lib

* update item types and add attachments

* add attachment API

* implement service context

* consolidate API code

* implement editing attachments

* implement upload limit configuration

* improve error handling

* add docs for max upload size

* fix test cases

frontend/components/Item/Card.vue

@@ -23,6 +23,7 @@
 
 <script setup lang="ts">
   import { ItemOut, ItemSummary } from "~~/lib/api/types/data-contracts";
+  import { truncate } from "~~/lib/strings";
 
   const props = defineProps({
     item: {