vergabe-api: German public procurement notices

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'notice UUID'}}, 'additionalProperties': False}

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'cpv': {'type': 'string', 'pattern': '^\\d{2,8}$', 'description': 'CPV code or prefix, e.g. 72 (IT), 45 (construction)'}}, 'additionalProperties': False}

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'q': {'type': 'string'}, 'cpv': {'type': 'string'}, 'kind': {'enum': ['competition', 'result', 'planning', 'change', 'all'], 'type': 'string'}, 'nuts': {'type': 'string'}, 'sort': {'enum': ['published', 'deadline'], 'type': 'string'}, 'limit': {'type': 'integer'}, 'since': {'type': 'string'}, 'until': {'type': 'string'}, 'fields': {'enum': ['compact', 'full'], 'type': 'string'}, 'nature': {'type': 'string'}, 'offset': {'type': 'integer'}, 'min_value': {'type': 'number'}, 'procedure': {'type': 'string'}, 'buyer_type': {'type': 'string'}, 'legal_basis': {'type': 'string'}, 'deadline_after': {'type': 'string'}, 'deadline_before': {'type': 'string'}}, 'additionalProperties': False}

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}