Introduction to dolo/dolang/dolark/dolo_models/bttt

[albop]

It would be useful to write some introductory material to the various libraries associated with dolo for new developers (PY: Python, JL: Julia)

• dolang (PY,JL): manipulation of symbolic equations, functions construction, yaml file parsing
• dolo (PY, JL): definition of RE models, solution methods, depends on dolang
• dolark (PY): heterogeneous agents layer on top of dolo
• dolo_models (runnable with PY/JL): set of dolo models
• bttt: completely different modeling language to solve a model on an event graph (depends, weakly on dolang)