Preparations for factor instances provider

[CyonAlexRDX]

This is the redo_rere branch with rm -rf src/factor_instances_provider commit ( 7c633ee ) on top. Which I will then revert in a new PR, which will be the FactorInstancesProvider PR...

[codecov]

Codecov Report

Attention: Patch coverage is 75.42857% with 43 lines in your changes missing coverage. Please review.

Project coverage is 94.3%. Comparing base (c7839f4) to head (7c633ee).
Report is 115 commits behind head on main.

Files with missing lines	Patch %	Lines
src/types/new_types/factor_instances.rs	48.2%	15 Missing ⚠️
src/types/new_types/accounts.rs	52.6%	9 Missing ⚠️
src/types/new_types/securified_account.rs	73.9%	6 Missing ⚠️
src/types/new_types/securified_entities.rs	66.6%	6 Missing ⚠️
src/types/new_methods_on_sargon_types.rs	0.0%	3 Missing ⚠️
src/types/new_types/securified_accounts.rs	87.5%	2 Missing ⚠️
src/types/new_types/unsecurified_entity.rs	90.4%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main     #17     +/-   ##
=======================================
- Coverage   96.1%   94.3%   -1.8%     
=======================================
  Files         49      57      +8     
  Lines       1136    1288    +152     
=======================================
+ Hits        1092    1215    +123     
- Misses        44      73     +29     

Files with missing lines	Coverage Δ
src/derivation/collector/key_derivation_outcome.rs	100.0% <100.0%> (ø)
src/derivation/collector/key_ring.rs	100.0% <100.0%> (ø)
src/derivation/collector/keys_collector.rs	96.9% <100.0%> (+0.1%)	⬆️
src/derivation/collector/keys_collector_state.rs	100.0% <100.0%> (ø)
...raction/requests/mono_factor_sign_request_input.rs	100.0% <ø> (ø)
...raction/requests/transaction_sign_request_input.rs	100.0% <ø> (ø)
src/signing/petition_types/factor_list_kind.rs	100.0% <100.0%> (ø)
src/types/new_types/u30.rs	100.0% <100.0%> (ø)
src/types/new_types/veci.rs	100.0% <100.0%> (ø)
src/types/new_types/securified_accounts.rs	87.5% <87.5%> (ø)
... and 6 more

... and 2 files with indirect coverage changes