Github actions broken following removing 'pod-install'

[DavidBertet]

Describe the bug
Bootstrapping the project was relatively easy thanks to 'pod-install'. No need to have any pre-requisite on your computer.

While I get the security concern, making it accessible for a beginner might be tough. And even for others, they might not have pod installed globally (I don't)

As of now

• Github actions are broken as it can't find pod
• Using postinstall instead of bootstrap makes it throw an error on Window/Linux. We should be able to use Android on these
• example was convenient to run the example project from root directory
• Doc is out of sync

To Reproduce
N/A

Expected behavior
Not exactly sure what's the solution, but we should address those downsides. As is, it makes the project much less beginner friendly

Using Gemfile + Bundler + bundle exec permits to manage the version of Cocoapods, but makes it over complicated
Asking to run sudo gem install cocoapods makes it use whatever version available at that time, which will cause issues

Screenshots
N/A