Add panic method to stdlib

[jfecher]

Problem

We should add a panic method to stdlib as a way to halt computation and return a value of any type, since we know it can't be used. assert(false) alone is insufficient since it returns a unit type.

Happy Case

We add the function:

fn panic<T, U, let N: u32>(message: fmtstr<N, T>) -> U {
    assert(false, message);
    std::meta::zeroed()
}

The prelude would be a good place for it since users will be used to panic!() being available in rust without import.

Workaround

None

Workaround Description

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Additional Context

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Project Impact

None

Blocker Context

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