Add EditorConfig extension #15

Job	Run time
Lint / Lint shell scripts	13s
Lint / Validate devcontainer-feature.json files	3s
Test / Feature actionlint	29s
Test / Feature actionlint » debian:latest	24s
Test / Feature postgresql-client	28s
Test / Feature actionlint » ubuntu:latest	18s
Test / Feature actionlint » mcr.microsoft.com/devcontainers/base:ubuntu	21s
Test / Feature postgresql-client » debian:latest	15s
Test / Feature shellcheck	27s
Test / Feature postgresql-client » ubuntu:latest	24s
Test / Feature postgresql-client » mcr.microsoft.com/devcontainers/base:ubuntu	25s
Test / Feature shellcheck » debian:latest	16s
Test / Feature shellcheck » ubuntu:latest	20s
Test / Feature shellcheck » mcr.microsoft.com/devcontainers/base:ubuntu	26s
Publish to GitHub Packages	15s
	5m 4s

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