SCA-819 add pipelines to create release and maintain a major version tag

[wrngrn]

Merges to main will create release for next version

Version number will increment

• patch number by default
• minor number if commit message continues "feature: "
• major number if commit message contains "breaking: "

Once a release has been created the update tag workflow will trigger to maintain the latest major tag against the latest commit. eg v1 will always point to latest v1.x.x version.

Releasing to marketplace cannot currently be automated as it requires 2fa. If you want a release pushed to marketplace edit the release and untick and retick publish to marketplace option and save.

[wrngrn]

Will merge once PAT is available. Have ordered via service desk

[wrngrn]

PAT added ready for review