Update shield builder primary role validation

[sergiupuhalschi-rdx]

This PR updates the shield builder validation logic by introducing two key updates:

1. Factor Source Selection: It now allows adding the same factor source for both the threshold and override lists in the primary role.
2. Multiple Device Selection: It supports adding multiple devices within the primary role.

The validate() function has been updated to continue reflecting that these rules violations and therefore making the shield status Weak with the corresponding underlying reason.

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 5 lines in your changes missing coverage. Please review.

Project coverage is 92.68%. Comparing base (40da3cf) to head (45bf862).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...matrices_structures/roles/builder/roles_builder.rs	73.33%	4 Missing ⚠️
...ructures/security_shield_builder_rule_violation.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #353      +/-   ##
==========================================
- Coverage   92.68%   92.68%   -0.01%     
==========================================
  Files        1166     1166              
  Lines       26078    26084       +6     
  Branches       81       81              
==========================================
+ Hits        24171    24175       +4     
- Misses       1896     1898       +2     
  Partials       11       11              

Flag	Coverage Δ
kotlin	97.73% <ø> (ø)
rust	92.18% <87.50%> (-0.01%)	⬇️
swift	93.76% <ø> (ø)

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[GhenadieVP]

LGTM!