Add .editorconfig #1889

Scan in OpenScanHub is finished. No new findings identified.

Name/Job	URL
Dashboard	https://dashboard.packit.dev/jobs/openscanhub/26020
OpenScanHub task	http://openscanhub.fedoraproject.org/task/73832/

⚠️ You can see the list of known issues and also provide your feedback here.

You can disable the scanning in your configuration by setting osh_diff_scan_after_copr_build to false. For more information, see docs.

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