Move memory-related errors to MemoryError

[fmoletta]

• Remove unused error variants
• Move memory-related error variants to MemoryError
• Change memory getters to return MemoryError instead of VirtualMachineError
• Change all memory-related errors in hint from HintError::Internal(VmError::... to HintError::Memory(MemoryError::...
  Depends on Simplify Memory::get return type to Option #852
  Will probably collide with Improve error handling of ids variables #851, should be merged afterwards

[juanbono]

LGTM

[codecov]

Codecov Report

Merging #854 (c718073) into main (763fc5f) will increase coverage by 0.01%.
The diff coverage is 97.93%.

@@            Coverage Diff             @@
##             main     #854      +/-   ##
==========================================
+ Coverage   96.82%   96.84%   +0.01%     
==========================================
  Files          69       69              
  Lines       28804    28784      -20     
==========================================
- Hits        27889    27875      -14     
+ Misses        915      909       -6     

Impacted Files	Coverage Δ
...t_processor/builtin_hint_processor/dict_manager.rs	96.73% <ø> (+1.00%)	⬆️
src/hint_processor/hint_processor_utils.rs	88.84% <0.00%> (+0.37%)	⬆️
src/vm/trace/mod.rs	92.50% <0.00%> (ø)
..._processor/builtin_hint_processor/blake2s_utils.rs	99.49% <100.00%> (+<0.01%)	⬆️
...int_processor/builtin_hint_processor_definition.rs	98.67% <100.00%> (ø)
...uiltin_hint_processor/cairo_keccak/keccak_hints.rs	93.93% <100.00%> (+0.40%)	⬆️
...rocessor/builtin_hint_processor/dict_hint_utils.rs	99.22% <100.00%> (ø)
...int_processor/builtin_hint_processor/hint_utils.rs	94.59% <100.00%> (ø)
...int_processor/builtin_hint_processor/math_utils.rs	97.94% <100.00%> (-0.01%)	⬇️
...t_processor/builtin_hint_processor/memset_utils.rs	100.00% <100.00%> (ø)
... and 21 more

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[Jrigada]

Great change!