Add GitHub pull request template

[supreeth7]

There are cases where PRs are submitted with no description. This is a poor posture from a compliance and review perspective. This PR adds a template to encourage engineers to answer a standard set of questions when submitted to kite.

[supreeth7]

/assign @T0MASD

[supreeth7]

/bark

[openshift-ci]

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[MitaliBhalla]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: MitaliBhalla, supreeth7

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[openshift-ci]

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