Scalability improvements: Increment artifact version server side

[schustmi]

Describe changes

This PR reduces that amount of server requests that are needed to create an artifact version:

• The artifact can now be created as part of the artifact version request
• The metadata can now be created as part of the artifact version request
• The version auto-increment is now happening server-side

Breaking change:

• This PR removes the option to manually specify a numeric version for an artifact version

Pre-requisites

Please ensure you have done the following:

• [ ] I have read the CONTRIBUTING.md document.
• [ ] If my change requires a change to docs, I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [ ] I have based my new branch on develop and the open PR is targeting develop. If your branch wasn't based on develop read Contribution guide on rebasing branch to develop.
• [ ] If my changes require changes to the dashboard, these changes are communicated/requested.

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Other (add details above)