[PAYSHIP-2824] GitHub workflow PS8

[seiwan]

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[seiwan]

This PR is ready to review but we have to wait some devops actions (already requested) :

• New GCP accounts + permissions to use the action gcp-auth (workload-federation) for each env
• Add the secrets on WI_PROVIDER and WI_SA for each env
• Create the GCP bucket storages on integration and preprod (should be called checkout-assets-preproduction and checkout-assets-integration)

Add the labels ps8 and integration deployment / preproduction deployment to trigger the workflow
Labels are not created yet, so you can change them in the PR if you want.

@Matt75 FYI :
I added a condition to trigger PHP and JS tests only when we will add the label ready to review
I created the secrets stores on projects ps-checkout-, it's called module-env. I cleaned it a little bit in prod (with help from @L3RAZ), but you can take a look.