fix: reject unknown properties on session() and charge() at compile time

[brendanjryan]

Problem

Makes interface for kwargs on mppx core types safer

Solution

Add a NoExtraKeys<T, Shape> utility type that maps any key in T not present in Shape to never, and apply it to session() and charge() via overload signatures.

// Before: silently accepted
tempo.session({ stream: { poll: true }, ... })

// After: compile error
// Type '{ poll: true; }' is not assignable to type 'never'
tempo.session({ stream: { poll: true }, ... })

[pkg-pr-new]

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npm i https://pkg.pr.new/mppx@203

commit: cb52419