kele-list: show owner references in column

[jinnovation]

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 28.57143% with 10 lines in your changes missing coverage. Please review.

Project coverage is 63.64%. Comparing base (22d91a1) to head (d7ac93e).

:exclamation: Current head d7ac93e differs from pull request most recent head fc3c154

Please upload reports for the commit fc3c154 to get more accurate results.

Files	Patch %	Lines
kele.el	28.57%	10 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #211 +/- ## ========================================== + Coverage 63.62% 63.64% +0.02% ========================================== Files 1 1 Lines 745 751 +6 ========================================== + Hits 474 478 +4 - Misses 271 273 +2 ```

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[jinnovation]

Future items:

• RET when point on an owner-ref cell should kele-get the owner resource (with completion in cases of multi-owner)