Move flashLED & setLamp to start of file

[xtrinch]

If anyone tries to build and upload this with PlatformIO (esp32-cam-webserver.ino ->> main.cpp), they will be faced with compilation errors ("function not defined").
Moved the flashLED and setLamp to the start of the file to avoid those errors.

[easytarget]

:-) Thankyou!
I try to remember this should build in 'normal' make use, but the ArduinoIDE additional preprocessing makes it so easy to be lazy. But in keeping with the 'example' bit of the project I am only building and developing on the official IDE for now ;-)

I am, however, about to start an (unrelated) project that I intend to do as a PlatformIO one from scratch (and learn it that way), I might well come back after v3 and, at least, set up a Travis/PlatformIO build in parallel to the ArduinoIDE one.