Consistent file names for generated model files (#1448)
Consistent file names for generated model files (#1448)

So far generated model `.cpp` file names were prefixed with `${model_name}_`, but `.h` were not.
Now the model name prefix is added to all file names.

Closes #1445
AMICI-developer/AMICI,FFroehlich/AMICI,AMICI-developer/AMICI,FFroehlich/AMICI,FFroehlich/AMICI,AMICI-developer/AMICI,AMICI-developer/AMICI,FFroehlich/AMICI