Include (closer to) only what you actually use

[robertlipe]

Description

Everything includes globals.h. (It's not great, but I get it...) Globals.h includes most everything.

This just isn't great for modularity and dependency tracking.

Tired of watching audio.cpp and network.cpp get recompiled when I touched "remotecontrol.h" (wat?), I tore into globals.h. IMO, I didn't trim aggressively, but if you read each line removed and ask "does every file in the source code have a WHATEVER?", the review should go down pretty smoothly. Hopefully, the remote example is self-evident.

Of course, some #includes did get moved to the source files where they're actually needed. You need a spiffs object or a WiFi password or a JPEG decoder? Let me hook you up with some of those. But audio doesn't need improv and improv doesn't need soundanalyzer and so on.

The code could still use a good bathing in "include-what-you-use", but this gets rid of most of the lower-hanging and silly fruit.

Tested: Successful buildbuddy.

Now I can go fix work on remote and not keep rebuilding ntpclient.

Contributing requirements

• [x] I read the contribution guidelines in CONTRIBUTING.md.
• [x] I understand the BlinkenPerBit metric, and maximized it in this PR.
• [x] I selected main as the target branch.
• [x] All code herein is subjected to the license terms in COPYING.txt.