Ar/psr 84 use smart contract trie for key value store

[allanbrondum]

Purpose

Change the token key-value state to be implemented by the smart contract trie.

Changes

• implemented adapter for the smart contract trie in block_state::smart_contract_trie
• changed state::protocol_level_tokens to use the smart contract trie adapter

Checklist

• My code follows the style of this project.
• The code compiles without warnings.
• I have performed a self-review of the changes.
• I have documented my code, in particular the intent of the
  hard-to-understand areas.
• (If necessary) I have updated the CHANGELOG.

[codecov]

Codecov Report

❌ Patch coverage is 94.30199% with 20 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.81%. Comparing base (df755fd) to head (2f0b3db).
⚠️ Report is 22 commits behind head on feature/rust_block_state.

Files with missing lines	Patch %	Lines
...block-state/src/block_state/smart_contract_trie.rs	96.26%	10 Missing ⚠️
plt/plt-token-module/src/key_value_state.rs	81.48%	5 Missing ⚠️
...ate/src/block_state/state/protocol_level_tokens.rs	75.00%	3 Missing ⚠️
plt/plt-scheduler/src/token_kernel.rs	50.00%	2 Missing ⚠️

Additional details and impacted files

@@                     Coverage Diff                      @@
##           feature/rust_block_state    #1612      +/-   ##
============================================================
+ Coverage                     63.29%   63.81%   +0.51%     
============================================================
  Files                           351      354       +3     
  Lines                         69602    70742    +1140     
  Branches                       3013     3015       +2     
============================================================
+ Hits                          44058    45147    +1089     
- Misses                        22531    22580      +49     
- Partials                       3013     3015       +2     

Files with missing lines	Coverage Δ
plt/plt-block-state/src/block_state.rs	96.49% <100.00%> (+13.08%)	⬆️
...ate/src/block_state/types/protocol_level_tokens.rs	100.00% <ø> (ø)
...-scheduler-interface/src/token_kernel_interface.rs	100.00% <ø> (ø)
plt/plt-scheduler/src/queries.rs	100.00% <ø> (ø)
plt/plt-token-module/src/roles.rs	98.66% <100.00%> (ø)
...lt/plt-token-module/src/token_module/initialize.rs	80.28% <100.00%> (+0.57%)	⬆️
plt/plt-scheduler/src/token_kernel.rs	79.89% <50.00%> (ø)
...ate/src/block_state/state/protocol_level_tokens.rs	87.24% <75.00%> (ø)
plt/plt-token-module/src/key_value_state.rs	86.19% <81.48%> (+0.29%)	⬆️
...block-state/src/block_state/smart_contract_trie.rs	96.26% <96.26%> (ø)

... and 8 files with indirect coverage changes