Deployment of notary-server using GH Actions & AWS CodeDeploy

[ntampakas]

This PR introduces automatic deployment of notary-server binary to a dedicated AWS EC2 instance using GH Actions Workflow and triggering AWS CodeDeploy with temporary security credentials in IAM.

• The cargo build step is executed on a GH runner to avoid computational needs on our server and potential disruptions. This approach also helps to decrease app downtime.
• The new binary is uploaded to an S3 bucket, and when CodeDeploy is triggered it:
  • checkouts the selected branch
  • retrieves the binary from the S3 bucket
  • copies it to the appropriate directory
  • restarts the process.

Additionally, a log file has been introduced under the tlsn directory and the workflow supports nightly and stable versions deployment.

[heeckhau]

Looking good!
I have added some comments and questions

[yuroitaki]

Looks great! Got a few comments, though most are just cosmetic

[yuroitaki]

Thanks so much again for your help @ntampakas !