Create common upload function

[simenandre]

We probably want to have a function that does file uploads (including getting signed URL).

Re:

backoffice/src/modules/catalog/product/components/ProductBasicOptions.tsx

Lines 137 to 158 in e6d7132

	async (files: FileList) => {
	_.map(Array.from(files), async ({ name, type, size }, i) => {
	const {
	data: {
	signedUrl: { url, accessUrl },
	},
	}: { data: GetSignedUrl } = await gqlClient.query({
	query: QUERY_GET_SIGNED_URL,
	variables: {
	input: {
	filename: name,
	contentType: type,
	contentLength: size,
	},
	},
	});
	await fetch(url, { method: 'PUT', body: files[i] });
	console.log(accessUrl);
	setFieldValue('images', [
	...(form.values.images || []),
	{ url: accessUrl },
	]);