Add OWNERS file

[kim-tsao]

Please specify the area for this PR

What does does this PR do / why we need it:
Adds the entire devfile team as approvers and reviewers of the integration tests in this repo.

Which issue(s) this PR fixes:

Fixes #?
devfile/api#1027

PR acceptance criteria:

• Test Coverage
  • Are your changes sufficiently tested, and are any applicable test cases added or updated to cover your changes?
• Gosec scans
  • Fix all MEDIUM and higher findings and/or annotate a finding per gosec instructions: https://github.com/securego/gosec#annotating-code to address why a finding is not a security issue

Documentation

• Does the registry operator documentation need to updated with your changes?

How to test changes / Special notes to the reviewer:

[michael-valdron]

/lgtm

[michael-valdron]

Also fixes devfile/api#1105

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (d69e00a) 22.72% compared to head (5e9906e) 22.72%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #43   +/-   ##
=======================================
  Coverage   22.72%   22.72%           
=======================================
  Files          23       23           
  Lines        1307     1307           
=======================================
  Hits          297      297           
  Misses        995      995           
  Partials       15       15           

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[elsony]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: elsony, kim-tsao, michael-valdron

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment