Template additional enhancements

[ascott18]

### Tasks
- [ ] template: Unit Tests
- [ ] template: Integration Tests
- [x] template: Azure Pipelines starter pipeline
- [ ] https://github.com/IntelliTect/Coalesce/issues/440
- [ ] https://github.com/IntelliTect/Coalesce/issues/441
- [x] template: Local accounts (first-party username/password)
- [x] template: Other OAuth/OIDC provider