Add type check for all arguments in `dynr.model`

[mhunter1]

That is, check that the dynamics argument of dynr.model() has a type that inherits from dynrDynamicsForumla or dynrDynamicsMatrx.

Do similar with

• [x] regimes
• [x] measurement
• [x] noise
• [x] initial
• [x] data
• [x] transform
• [x] dynamics