Migrating AR1 Lecture to Intro Series

[HumphreyYang]

Hi @jstac and @mmcky,

As I was migrating the lecture, I found that our lecture on AR1 Processes was not assigned to a target repository.

I think it might belong to the intro series, as a sequel of Dynamics in One Dimension.

Please kindly let me know if you would like me to migrate it to this series as more advanced lectures frequently reference it.

Many thanks in advance.

[jstac]

Thanks @HumphreyYang , good catch! Yes, let's put it in the intro lecture series.

It's not a nonlinear model, so perhaps we should add it to "Stochastic dynamics" instead. Let's make it the first lecture there, in front of the Markov chain lectures.

[HumphreyYang]

Many thanks @jstac.

TODOs:

• [x] Migrate ar1_processes.md (#335)
• [x] Add migration notice to intermediate series (https://github.com/QuantEcon/lecture-python.myst/pull/385)

[mmcky]

thanks @HumphreyYang