Add recommended push hook to repository

[pocmo]

I like how other teams have this in the repository:
https://github.com/mozilla-mobile/firefox-tv/blob/master/quality/pre-push-recommended.sh

Let's do that too and add something to our docs about how to use it.

┆Issue is synchronized with this Jira Task

[Amejia481]

Apart from ktlint and detektCheck tasks. Is there another task that we should run too ?

[pocmo]

I also run assemble in my hook. Most of the time that's fast enough because most components are already built. However that can take a bit if you haven't done or if your cache is not up to date.

[mcomella]

@pocmo Where should this hook be located? Where is an appropriate place to document it? There are no development environment set-up steps in the root README.