OTA web update

[tablatronix]

I just realized there is no issue for this PR feature
#587

This is added to the OTA branch as a test for now.

I was going to abstract it out into an example, but I might just leave it in and fix it up.

This is available by adding it to the menu, and is active in the DEV/ example

It is available if you add it (token is update) to the menu

  std::vector<const char *> menu = {"wifi","info","param","update","close","sep","erase","restart","exit"};
  wm.setMenu(menu); // custom menu, pass vector

• add permissions, make hook/route disabled not just menu!
• find a good way to document this, as it does not work via captive portals! ( maybe even hide it )
• Better handling of update success

[gitcnd]

How do I download and install your OTA branch? Why is it not the default?

[tablatronix]

• add check for and get update via http client, users add their own server address, opt url input on ota page, or save in memory

[tablatronix]

• remove Excessive logging during binary upload of handle root
• add js progress bar

[tablatronix]

Merged into master