Moving td-tools to separate repository

Given that the td-tools package can be used without the other node-wot components, it makes sort of sense to move it out to its own repository since people are confused and think that it is part of node-wot. With the new GitHub organization, this should be easy and can be easily kept governed in a similar way. Even if everyone is ok with it, we should decide on:
- Name of the repository and project.
- Whether each kind of tool is a separate package (TM tools one, AID another)
- Relationship to playground "td tools" which are packages that manipulate TDs in different ways such as OpenAPI generation, inserting defaults etc.
- Versioning of those packages in relationship to node-wot