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/global/DropZone.vue

@@ -0,0 +1,31 @@
+<template>
+  <div
+    ref="el"
+    class="h-24 w-full border-2 border-primary border-dashed grid place-content-center"
+    :class="isOverDropZone ? 'bg-primary bg-opacity-10' : ''"
+  >
+    <slot />
+  </div>
+</template>
+
+<script setup lang="ts">
+  defineProps({
+    modelValue: {
+      type: Boolean,
+      required: false,
+    },
+  });
+
+  const emit = defineEmits(["update:modelValue", "drop"]);
+
+  const el = ref<HTMLDivElement>(null);
+  const { isOverDropZone } = useDropZone(el, files => {
+    emit("drop", files);
+  });
+
+  watch(isOverDropZone, () => {
+    emit("update:modelValue", isOverDropZone.value);
+  });
+</script>
+
+<style scoped></style>