Break down the howto guide into a simpler step by step

[Willow-Systems]

The current howto is quite a wall of text and, judging by some discord questions, not 100% effective.

I suggest we break it into a smaller flowchart or step-by-step style guide where the user follows along.

I'm happy to take a crack at it sometime soon

[lavglaab]

very professional mockup, just give me this and ill be happy

[lavglaab]

visual hierarchy is important for breaking up a wall of text, so bolding step titles and making sure you can pretty much just skim the article and click the colorful stuff should be a goal

[ishotjr]

@Willow-Systems @piggehperson love it - thanks, team!! :metal: :star_struck: :metal:

[Willow-Systems]

I've given it a whirl. It's still wordy but now iOS and Android are separate. Leave feedback on the commit :)

https://github.com/pebble-dev/pebble-dev.github.io/commit/5b237430e2748dc96e211ceb37d8b896d9182cac