Store build artifacts

[balloob]

This stores the build artifacts generated durings the Platform.IO build. This will allow people to easily test the builds.

Generates a zip file with every firmware.bin. Current contents:

./fib64_mini__d1_mini/firmware.bin
./fastled_webserver__d1_mini/firmware.bin
./chamaeleon64__d1_mini/firmware.bin
./fib32__d1_mini/firmware.bin
./fib64_full__d1_mini/firmware.bin
./esp_thing__d1_mini/firmware.bin
./fib256__d1_mini/firmware.bin
./fib512__d1_mini/firmware.bin
./kraken64__d1_mini/firmware.bin
./1628_rings__d1_mini/firmware.bin
./fib128__d1_mini/firmware.bin

Example run

[jasoncoon]

👏 Thank you!

It'd be really great if we could individually package each product's firmware and filesystem files together, if even just on merges to master, but this is a great start!

[balloob]

Having individual artifacts is easy if we want to hardcode all the names. It would just be what I added but without a glob and once for each firmware. But then that’s something you have to maintain. Not sure if it’s possible with a glob.