✨ Support Register Arguments in Assertions

[DRovara]

Description

This small PR adds support for register arguments in assertions. Now, instead of having to write

qreg q[3];
assert-eq q[0], q[1], q[2] { 1, 0, 0, 0, 0, 0, 0, 0 }

users can write

qreg q[3];
assert-eq q { 1, 0, 0, 0, 0, 0, 0, 0 }

Mixing and matching is also supported (e.g. assert-eq q, psi[0]).
This new format works for all types of assertions.

Checklist:

• The pull request only contains commits that are related to it.
• I have added appropriate tests and documentation.
• I have made sure that all CI jobs on GitHub pass.
• The pull request introduces no new warnings and follows the project's style guidelines.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.8%. Comparing base (8d6a313) to head (8dae28e).

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Additional details and impacted files

@@          Coverage Diff          @@
##            main     #21   +/-   ##
=====================================
  Coverage   98.7%   98.8%           
=====================================
  Files          9       9           
  Lines       1582    1616   +34     
  Branches     289     296    +7     
=====================================
+ Hits        1563    1598   +35     
+ Misses        19      18    -1     

Flag	Coverage Δ
cpp	98.8% <100.0%> (+<0.1%)	⬆️
python	100.0% <ø> (ø)

Files with missing lines	Coverage Δ
include/common/parsing/AssertionParsing.hpp	100.0% <100.0%> (ø)
src/common/parsing/AssertionParsing.cpp	100.0% <100.0%> (ø)
src/common/parsing/CodePreprocessing.cpp	98.7% <100.0%> (+0.1%)	⬆️

... and 1 file with indirect coverage changes