Add new features in QCircuit and fix circuit extraction

[ChenZhao44]

Add new features in QCircuit: adjoint, vcat, getindex Bug fixed:

1. wrong conversion from ZXDiagram to QCircuit
2. fix the wrong way to add edges in circuit extraction (maybe cause the permutation matrix in the final step unavailable)

[codecov[bot]]

Codecov Report

Merging #63 into master will decrease coverage by 0.37%. The diff coverage is 58.33%.

@@            Coverage Diff             @@
##           master      #63      +/-   ##
==========================================
- Coverage   89.26%   88.88%   -0.38%     
==========================================
  Files          10       10              
  Lines        1360     1386      +26     
==========================================
+ Hits         1214     1232      +18     
- Misses        146      154       +8     

Impacted Files	Coverage Δ
src/circuit_extraction.jl	75.31% <30.00%> (-0.97%)	:arrow_down:
src/qcircuit.jl	73.78% <69.23%> (+0.16%)	:arrow_up:
src/abstract_zx_diagram.jl	0.00% <0.00%> (-6.67%)	:arrow_down:
src/rules.jl	96.13% <0.00%> (+0.19%)	:arrow_up:

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