Adding manager email templates to pipeline mailer

[ksierks]

What does this PR do and why?

Sends user email to human pipeline submitter & sends manager emails if automated pipeline was submitted by bot. Fixes #575.

Screenshots or screen recordings

Pipeline completed manger email: Pipeline errored manger email:

How to set up and validate locally

1. Install local mock email service, Mailhog.
2. After setup, open a terminal and run ~/go/bin/MailHog.
3. Run irida-next.
4. Login as user1@email.com
5. Create a personal project named test awe
6. Add a few owners and maintainers to the project.
7. Open a rails console and execute the following to add an automated workflow execution:

   AutomatedWorkflowExecutions::CreateService.new(User.find_by(email: 'user1@email.com'), { namespace: Namespaces::ProjectNamespace.find_by_full_path('user1_at_email.com/test-awe'), metadata: { workflow_name: 'phac-nml/iridanextexample', workflow_version: '1.0.2' },
   workflow_params: { assembler: 'stub' }, email_notification: false, update_samples: true }).execute

8. In Project test awe create a new sample named test001
9. Upload pair end data to test001
10. Select the newly created workflow execution.

    w = WorkflowExecution.where(submitter: Project.last.namespace.automation_bot).first

11. Make sure email notifications are enabled.

    w.email_notification = true

12. Change state to completed or error.

    w.state = "completed"

13. Save the workflow execution.

    w.save

14. Check mock email service for sent email. Open a browser and navigate to http://0.0.0.0:8025/.
15. Repeat steps for state error.

PR acceptance checklist

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• [x] I have evaluated the PR acceptance checklist for this PR.

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Simplecov Report

Covered	Threshold
92.17%	90%