This commit introduces the re-export of the listed primitives.
They will be used inside Miden to report the security level of the
picked primitive, as well as other functionality.
closes#72
This commit moves the previous implementation of `SparseMerkleTree` from
miden-core to this crate.
It also include a couple of new tests, a bench suite, and a couple of
minor fixes. The original API was preserved to maintain compatibility
with `AdviceTape`.
closes#21
