fix: upgrade plasmo and to remove tsconfig warning

[louisgv]

This PR:

• Add cross-env (to run on Windows)
• Upgrade plasmo to 0.68.0 and TS to 5.0.4
• Upgrade and align some typing dependencies

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Name	Status	Preview	Comments	Updated (UTC)
window-ai	❌ Failed (Inspect)			Apr 15, 2023 7:20pm