Add staging release workflow

[F-X64]

What has changed?

• Add checkout for latest release tag on production
• Add staging workflow

How to run a staging release?

1. Staging releases will run on push to main.
2. Staging releases can be triggered manually. Simply head to actions, select the transformer workflow, choose your branch and select the environment you want to run in (staging):
   
   When running a staging release the latest branch commit will checked out.

Why don't we run the staging release on PRs?
Staging / production releases require AWS credentials. This would only work on PRs opened from branches within the organization but not on PRs opened from forks. There's also the possibility that forks could contain malicious code that we don't want to deploy into our infrastructure.

How to run a production release?

1. Production releases run on scheduled runs (each night).
2. Production releases can be triggered from the transformer workflow as mentioned above (just select production as target environment).
   
   When running production releases, the latest release tag will be checked out.

How to tag a new release?
The easiest way to create a new release tag is to simply create a new release from the release menu in Github.
Make sure to use the next ascending release version and use the schema MAJOR.MINOR.PATCH

To read more about our release process see the documentation

Closes #683

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (a7a3a75) 93.90% compared to head (20eb285) 93.90%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #684   +/-   ##
=======================================
  Coverage   93.90%   93.90%           
=======================================
  Files           9        9           
  Lines         410      410           
  Branches       88       88           
=======================================
  Hits          385      385           
  Misses         13       13           
  Partials       12       12           

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[miyunari]

Let's discuss this, I have some questions and suggestions :)

[miyunari]

I took a closer look and seems legit to me! Thanks for doing this 👍