feat: Add boxed precompile trait

[rakita]

closes: #798

Box is over the trait that has a call function. Trait is sync/send so it can be stored inside OnceBox.
And DynClone is added so precompiles can be cloned.

[github-actions]

Valgrind Results:

==4271== Cachegrind, a cache and branch-prediction profiler
==4271== Copyright (C) 2002-2017, and GNU GPL'd, by Nicholas Nethercote et al.
==4271== Using Valgrind-3.18.1 and LibVEX; rerun with -h for copyright info
==4271== Command: target/release/snailtracer
==4271== 
--4271-- warning: L3 cache found, using its data for the LL simulation.
Snailtracer Host+Interpreter benchmark (2.0s) ...            not enough samples
==4271== 
==4271== I   refs:      463,577,809
==4271== I1  misses:          3,414
==4271== LLi misses:          2,967
==4271== I1  miss rate:        0.00%
==4271== LLi miss rate:        0.00%
==4271== 
==4271== D   refs:      237,187,097  (160,464,398 rd   + 76,722,699 wr)
==4271== D1  misses:        349,641  (    209,336 rd   +    140,305 wr)
==4271== LLd misses:        137,601  (      4,058 rd   +    133,543 wr)
==4271== D1  miss rate:         0.1% (        0.1%     +        0.2%  )
==4271== LLd miss rate:         0.1% (        0.0%     +        0.2%  )
==4271== 
==4271== LL refs:           353,055  (    212,750 rd   +    140,305 wr)
==4271== LL misses:         140,568  (      7,025 rd   +    133,543 wr)
==4271== LL miss rate:          0.0% (        0.0%     +        0.2%  )

[rakita]

@mattsse can you take a look? Is this going to work

[mattsse]

lgtm

[gakonst]

v exciting. could we get an example of what a stateful precompile could look like?