Add action to automatically create new release when version updated

[A-CGray]

Purpose

Adds a github action that parses the current version number defined in the top level __init__.py file and makes a new release if the version is greater than the most recent release for the repo.

Our repos can then use this action by implementing a workflow such as:

name: Auto-Release on Version Bump

on:
  push:
    branches:
      - main
    paths:
      - '**/__init__.py' # Only run this check if an __init__.py file is modified, which is where the version is defined

# We need write permissions to create tags and releases
permissions:
  contents: write

jobs:
  release:
    needs: [build]
    uses: mdolab/.github/.github/workflows/autoRelease.yaml@main
    secrets: inherit

Expected time until merged

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

Testing

Checklist

• I have run ruff check and ruff format to make sure the Python code adheres to PEP-8 and is consistently formatted
• I have formatted the Fortran code with fprettify or C/C++ code with clang-format as applicable
• I have run unit and regression tests which pass locally with my changes
• I have added new tests that prove my fix is effective or that my feature works
• I have added necessary documentation