[Feature Request] Implement Versioning Process to Pull Request functionality

[woodham1]

Feature Description

Update the Pull Request Strategy to reflect the Release Strategy which is outlined in this document:
releases.md

Use Case

Solves the issue of PRs not being tagged appropriately or confusion around the versioning process.

Proposed Solution

Create the appropriate tags and release models so we can merge in code into appropriate stellar engine versions with a path to upgrade for appropriate customers

Compliance & Deployment Context

• Target Deployment Type(s):
  • US Region Restricted (e.g., Access Policy constraint)
  • FedRAMP Medium
  • FedRAMP High
  • DoD IL4
  • DoD IL5
  • All / General
• Relevant NIST 800-53r5 Controls: (If applicable, list the controls this feature helps satisfy)

Reusability Check

Stellar Engine prioritizes reusability.

• I have checked if this functionality can be achieved by extending an existing module or blueprint.
• I have verified that this does not duplicate existing functionality.