Add Xenition to AI Platforms

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Add Xenition

Why is this awesome?

• Describe what you want in plain language and get back a working full-stack app, a document, a deck, a spreadsheet or an image, without writing code.
• 23 editing surfaces share one memory and one asset library, so output from one surface flows straight into another instead of living in separate tools.
• Free tier with monthly credits and no credit card, so newcomers to nocode can try the whole workspace before paying.

Placed in AI Platforms, following the existing item format.