Add function to create joint parameter table from multiple models and measurement files

[dweindl]

This can also be extended to resolve name collisions from different models, where parameters have the same IDs but different meaning.

[yannikschaelte]

there should be different options, whether to prefix-make-unique shared parameters (problem: can lead to nasty long names), whether parameters having the same name should be merged because they actually mean tha same, or to throw an error, or to allow user-defined names (interative).