Add custom error message for `StorageNoopGuard` (#1727)

Expand `StorageNoopGuard` to be able to add extra context through a
custom error message. When the guard is triggered it panics with an
error message which can be defaulted, set on construction, or set after
it has been constructed.

Turn `StorageNoopGuard` into struct with `storage_root` and
`error_message` and added `from_error_message` constructor and
`set_error_message` setter.

Also added `new()` aliased to `default()`.

Closes #375

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Co-authored-by: joe petrowski <[email protected]>
Co-authored-by: Liam Aharon <[email protected]>