token_swapper to accept generic map and to return its swaps as (G::NodeId, G::NodeId)

[gluonhiggs]

Resolve #1437 and #1438 The modification is straightforward with some docs changes. My first commit is to resolve #1437. My 2nd commit is for #1438

[coveralls]

Pull Request Test Coverage Report for Build 15589798928

Details

• 49 of 52 (94.23%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.01%) to 95.27%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
rustworkx-core/src/token_swapper.rs	30	33	90.91%
<!--	Total:	49	52

Totals
Change from base Build 15448809297:	-0.01%
Covered Lines:	18973
Relevant Lines:	19915

---

💛 - Coveralls

[gluonhiggs]

Not a maintainer here. My understanding of https://github.com/Qiskit/rustworkx/blob/main/CONTRIBUTING.md is that you should add tests for this new functionality

I ran the existing tests and thought these were enough. Let me check again.

[gluonhiggs]

I have added new tests and modified the token_swapper rust core, wrapper, stub. Thank you for reminding me @1ucian0