Use S3 VPC Gateway Endpoint

[matusdrobuliak66]

Concept

Currently, we talk to S3 via the internet. We should use the S3 Endpoint which will talk directly within AWS network and without costs if it is in the same region & load balancing cost should decrease

• https://tomgregory.com/aws/when-to-use-an-aws-s3-vpc-endpoint/
• https://docs.aws.amazon.com/vpc/latest/privatelink/vpc-endpoints-s3.html

### Tasks
- [ ] Idea: Use S3 private VPC Endpoint to download solver results from comp jobs into rocket PCR

[mrnicegyu11]

On 27. Sept. 2024: Enabled AWS VPC S3 Gateway Endpoint for osparc-master-zmt.click via the AWS console (no terraform) in us-east-1