It should be possible to pass the case definition into StartCase

[tpetter]

Currently, when invoking StartCase command, it requires a reference to a case definitions document.
It should be possible to also pass the definition as an input to the StartCase itself, thereby shifting the deployment of case definitions outside of the engine.
Note that when this is implemented also the RepositoryRoute must be revisited, especially reviewing the relevance of the following APIs:

• /repository/list

• /repository/deploy

• /repository/load

• /repository/validate is still interesting, since this can be used as an end point from the IDE to do validation of the definitions file.

[tpetter]

Design consideration: interpret the definition parameter as a URL from which the definition will be loaded upon StartCase. RepositoryRoute might then be proxied to the same (base) url?