Allow to search work packages by ID

[naglis]

Currently, search is done by work package subject only:

sentry-openproject/sentry_openproject/client.py

Lines 116 to 131 in cda1869

	return self.request(
	'GET',
	'projects/{}/work_packages'.format(project_id),
	params={
	'filters': json.dumps([
	{
	'subject': {
	'operator': '~',
	'values': [
	query,
	],
	},
	},
	]),
	},
	)