refactor: initial devContainer effort

[esacteksab]

• chore: initial commit with local dev container
• chore: initial devcontainer.json

Summary

Release Notes Checklist

• I applied at least one release label that matches .github/release.yml.
• If this PR should be excluded from release notes, I applied ignore-changelog.
• If this is a breaking change, I applied type: breaking and documented impact/migration notes.