spinta check should validate dataset, model and property names according to requirements for codenames. Especially it should check if there are no trailing spaces.

Enable this functionality only on spinta check --names.

• Check if dataset, model and property names uses only allowed symbols.
• Check if dataset names are all lowercase.
• Check if model names are in UpperCameCase.
• Check if property names are in snake_case.
• Do not allow extra /at the start or end of dataset names.
• Do not allow empty // in dataset name.
• Allow __ prefix in all names, __ marks deleted nodes.