Context

Adds a new binary integer representation: unsigned 16 bits integer. One could ask me to add the same for I16, U8, I8.

Manually testing the MR

Create a kernel that writes a u16 in the durable storage and do:

rlwrap ./octez-smart-rollup-wasm-debugger <kernel> --inputs <inputs>
> load inputs
...
> step inbox
...
> show key X as u16
42

Document the interface of any function added or modified (see the coding guidelines)
Document any change to the user interface, including configuration parameters (see node configuration)
Provide automatic testing (see the testing guide).
For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
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Edited Apr 04, 2023 by Valentin Chaboche