Release v0.1.0

What's Changed

• Initial implementation by @yokaze in #1
• Add linter and move test data to testdata by @yokaze in #3
• Implement list command by @yokaze in #2
• Implement list -o simple by @yokaze in #4
• Add release workflow by @yokaze in #6

New Contributors

• @yokaze made their first contribution in #1

Full Changelog: https://github.com/cybozu-go/network-policy-viewer/commits/v0.1.0