add docs on native apps

[HarshCasper]

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[github-actions]

🎊 PR Preview has been successfully built and deployed to https://localstack-snowflake-docs-preview-pr-65.surge.sh 🎊

[hovaesco]

@HarshCasper thanks for submitting the PR 🙌

I'm not entirely sure if we should document this functionality yet—we don’t currently have a way to run applications, as the existing syntax only supports CRUD operations, happy to hear your thoughts @whummer

[whummer]

Kudos for proactively adding this here @HarshCasper ! 💪 Agree with @hovaesco , though - for native apps we currently only have the basic CRUD functionality in place. But we are hoping to make some progress on the actual native app deployment (at least in a very simple fashion) over the next couple of weeks 🤞 - so I would say we can leave this PR open for the time being, and then merge it as we move closer towards GA.. 👍