upload nextcloud data from UI

frontend/src/components/Settings/Migration/UploadMigrationButton.vue

@@ -0,0 +1,42 @@
+<template>
+  <v-form ref="file">
+    <v-file-input
+      :loading="loading"
+      label="Upload an Archive"
+      v-model="file"
+      accept=".zip"
+      @change="upload"
+    >
+    </v-file-input>
+  </v-form>
+</template>
+
+<script>
+import api from "../../../api";
+export default {
+  data() {
+    return {
+      file: null,
+      loading: false,
+    };
+  },
+  methods: {
+    async upload() {
+      if (this.file != null) {
+        this.loading = true;
+        let formData = new FormData();
+        formData.append("archive", this.file);
+
+        await api.migrations.uploadFile(formData);
+
+        this.loading = false;
+        this.$emit("uploaded");
+        this.file = null;
+      }
+    },
+  },
+};
+</script>
+
+<style>
+</style>