create: v2.16-bayesian_neural_network (#933)
create: v2.16-bayesian_neural_network (#933)

* create: v2.16-bayesian_neural_network

* feat: v2.16-bayesian_neural_network

Add titles; posterior std plot

* rename: bnn -> bnn_mlp_2d_hmc

* format: black
probml/pyprobml,probml/pyprobml,probml/pyprobml,probml/pyprobml