[Feature request]: Reduce size of assignment table file by using RLU coding

[akokoshn]

Problem

The size of file with assignment table is huge, writing/reading it (sys call) takes time. At the same time assignment table contains many zero values and we can use it,

Solution

Simple way - just apply RLU coding on marshaling step (for array_list member of tuple) and decode on the serialization.

Initial research

For sha2_256 example reduce size from 1795162136 to 432555642, ant time 2.5 sec to 1 sec

https://github.com/NilFoundation/zkLLVM/pull/521

[akokoshn]

Completed implementation (AC):

• Avoid global static class zero_count by passing reference of member array_list
• Allow enable/disable encoding (add method write_encode or parameter of write)
• Add marker in file for check if data was coded
• Add assigner command line option