Adding quickcheck for complete graph

[Krishn1412]

To verify the structural integrity of complete graph, we check the number of nodes, edges and whether all expected edges exist.

[Krishn1412]

hey @IvanIsCoding, is this failing because of some other changes?

[IvanIsCoding]

@Krishn1412 yes, with Rust 1.88 Clippy got updated which added new lints that now fail CI.

I will send a separate PR to fix it

[IvanIsCoding]

I temporarily disabled the failing lints, I will fix them in a separate PR.

[coveralls]

Pull Request Test Coverage Report for Build 15950401187

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 72 unchanged lines in 19 files lost coverage.
• Overall coverage decreased (-0.6%) to 94.575%

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Files with Coverage Reduction	New Missed Lines	%
rustworkx-core/src/centrality.rs	1	98.59%
rustworkx-core/src/generators/random_graph.rs	1	70.28%
rustworkx-core/src/steiner_tree.rs	1	96.55%
src/coloring.rs	1	98.82%
src/connectivity/johnson_simple_cycles.rs	1	97.44%
src/layout/spring.rs	1	99.56%
rustworkx-core/src/connectivity/biconnected.rs	2	97.62%
src/isomorphism/vf2.rs	2	96.01%
src/toposort.rs	2	89.38%
rustworkx-core/src/token_swapper.rs	3	95.59%

Totals
Change from base Build 15890388565:	-0.6%
Covered Lines:	17783
Relevant Lines:	18803

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💛 - Coveralls