[Feature]: Ability to Upload Yaml Files

[cancan101]

Feature description

Currently trying to upload yaml fails. Only JSON look to be accepted:

data-hub/src/Controller/ConfigController.php

Lines 573 to 582 in f88cb83

	/**
	* @Route("/import", methods={"POST"})
	*
	*/
	public function importConfiguration(Request $request, ImportService $importService): JsonResponse
	{
	try {
	$this->checkPermission(self::CONFIG_NAME);
	$json = file_get_contents($_FILES['Filedata']['tmp_name']);
	$configuration = $importService->importConfigurationJson($json);

this is despite yaml being the format we store the configs on file system.

[github-actions]

Thanks a lot for reporting the issue. We did not consider the issue as "Pimcore:Priority", "Pimcore:ToDo" or "Pimcore:Backlog", so we're not going to work on that anytime soon. Please create a pull request to fix the issue if this is a bug report. We'll then review it as quickly as possible. If you're interested in contributing a feature, please contact us first here before creating a pull request. We'll then decide whether we'd accept it or not. Thanks for your understanding.