Add Jenkinsfile to run internal automation

[kurtismullins]

Description of Changes

Adds a Jenkinsfile which is used to kick-off internal automation.

For those who do not have experience with Jenkins, the new Jenkinsfile automatically performs the following functions:

1. Sets a Github Status Check to Pending
2. Starts internal automation within Jenkins
3. Waits for the internal automation to finish executing
4. Updates the Github Status Check with a Success or Failure message depending on the results.

API and ABI breaking changes

n/a

Expected complexity level and risk

How complicated do you think these changes are? Grade on a scale from 1 to 5,
where 1 is a trivial change, and 5 is a deep-reaching and complex change.

This complexity rating applies not only to the complexity apparent in the diff,
but also to its interactions with existing and future code.

If you answered more than a 2, explain what is complex about the PR,
and what other components it interacts with in potentially concerning ways.

1 - Trivial and should not impact the source code at all.

Testing

Describe any testing you've done, and any testing you'd like your reviewers to do,
so that you're confident that all the changes work as expected!

• Verified that changes to this Pull Request automatically kick off the appropriate pipelines in Jenkins.

[cloutiertyler]

LGTM