Create release claude skill

[kikoveiga]

• Create a skill file to help us in the release process.
• Improve the release.sh script.
• Switch created to published in publish.yaml file so we can retrigger the publish job easily (if the version is actually already published on npm, it won't override it and nothing happens).

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: dd15ce544c

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[ambushwork]

LGTM, let's test with this next week before merging it

[ambushwork]

Can you add a step to verify that the release is available on npm?
for example, we should be able to open https://www.npmjs.com/package/datadog-roku/v/1.4.0 when 1.4.0 is published.

[kikoveiga]

Added in step 7 and npm publish verified (npm view and npmjs.com page) line on summary checklist.