Feat: Add model import button to Vue model list popover. (#7085)

## Summary

Adds a button to trigger the model upload on the Asset dropdown.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7085-Feat-Add-model-import-button-to-Vue-model-list-popover-2bd6d73d365081958c8ef23de55a341e)
by [Unito](https://www.unito.io)

src/platform/assets/composables/useModelUpload.ts

@@ -0,0 +1,35 @@
+import { useFeatureFlags } from '@/composables/useFeatureFlags'
+import UploadModelDialog from '@/platform/assets/components/UploadModelDialog.vue'
+import UploadModelDialogHeader from '@/platform/assets/components/UploadModelDialogHeader.vue'
+import type { AssetItem } from '@/platform/assets/schemas/assetSchema'
+import { useDialogStore } from '@/stores/dialogStore'
+import type { UseAsyncStateReturn } from '@vueuse/core'
+import { computed } from 'vue'
+
+export function useModelUpload(
+  execute?: UseAsyncStateReturn<AssetItem[], [], true>['execute']
+) {
+  const dialogStore = useDialogStore()
+  const { flags } = useFeatureFlags()
+  const isUploadButtonEnabled = computed(() => flags.modelUploadButtonEnabled)
+
+  function showUploadDialog() {
+    dialogStore.showDialog({
+      key: 'upload-model',
+      headerComponent: UploadModelDialogHeader,
+      component: UploadModelDialog,
+      props: {
+        onUploadSuccess: async () => {
+          await execute?.()
+        }
+      },
+      dialogComponentProps: {
+        pt: {
+          header: 'py-0! pl-0!',
+          content: 'p-0!'
+        }
+      }
+    })
+  }
+  return { isUploadButtonEnabled, showUploadDialog }
+}