add commands that call the inspector API

[tacman]

I'd like to be able to configure inspector without using the UI. So I can envision something like

symfony new MyTestProject --webapp && cd MyTestProject
composer require inspector-apm/inspector-bundle # my preferred name!
bin/console inspector:create 

At this point, the message is something like

Add the following environment variable
INSPECTOR_INGEST_KEY=abcd
INSPECTOR_APP_ID=4567

now I should be able to also run

bin/console inspector:stop
bin/console inspector:start
bin/console inspector:transactions

create is the hardest one, because it requires an account api key. I do something similar with https://packagist.org/packages/survos/bunny-bundle, where each zone has it's own keys, but you need a master key to create zones.