This PR implements the call data load API akin to [how it works on
ethereum](https://www.evm.codes/?fork=cancun#35).

There will also be a second PR to adjust the input function to resemble
the call data copy opcode on EVM.

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Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>
Co-authored-by: command-bot <>