add typing manager

[ofZach]

for handling the typing of code (ala https://www.google.com/trends/hottrends/visualize?pn=p1&nrow=3&ncol=4) and for do brett victor style focus on parameters....

[chanderson0]

Started working on this too, and a simple scroll-the-text-character-by-character doesn't look super great.

Probably better than static, but also not what we're looking for. Any references to the Brett Victor highlighting? This? https://www.youtube.com/watch?v=PUv66718DII

[ofZach]

I suspect the typing will have to be super fast.... variable speed per letter can help make it more real looking:

https://www.google.com/trends/hottrends/visualize

longer waits on the spaces, variable waits on letters.

I think all text might need to take like like 5 second to appear, maybe it's like typing on fast forward ?