feat(gstd): propagate stack allocations

[StackOverflowExcept1on]

Resolves #2880

Changes:

• msg::send*(...), msg::reply*(...), {prog, ProgramGenerator}::create_program<E>*(...) might use stack allocation if payload.encoded_size() is less than 64 KiB
• removed load_on_stack and reply_on_stack from gstd
• gstd::prelude re-exports MaxEncodedLen
• if the user uses #[derive(MaxEncodedLen)], then due to the specialization, encoding on stack is faster (no need to calculate the size)

[StackOverflowExcept1on]

I think we can make the write method infallible because:

1. ExternalBufferOutput is used when encoding on stack with precomputed size, where size <= 64 KiB. So overflow when adding numbers is impossible.
2. parity-scale-codec assumes that the write method is also infallible. For example, impl Output for Vec<u8> uses the Vec::extend_from_slice method, which does ptr::copy_nonoverlapping under the hood.

Performance impact:

0.9254876953446401 * 10^9 (master)
0.9276711477285593 * 10^9 (av/stack-allocation-2, with additional checks)
0.9215007208181087 * 10^9 (av/stack-allocation-2, with write infallible)