Add generation of functions to pass to ODEProblem, SDEProblem, JumpProblem

Functionality to generate ODEProblem, SDEProblem and JumpProblem [present in Petri.jl](https://github.com/AlgebraicJulia/Petri.jl/blob/main/src/solvers.jl) are missing in AlgebraicPetri. Can this functionality be added? This has to be done carefully in order to accommodate time-varying parameters correctly. @slwu89 suggested using [CompTime.jl](https://github.com/AlgebraicJulia/CompTime.jl) for this. @slmontes - could you take this on? @slwu89 - would you mind giving some pointers?