Improve LinkSimplify to work less aggressively and handle edge cases …

[bdon]

…[#53]

• allow multiple ways in connectors.
• allow connectors to touch a highway at any point, not just endpoints.

[bdon]

@nvkelso here's the new LinkSimplify in action:

It's not as aggressive as before, but we can add in more unit tests for new situations later!

https://github.com/protomaps/basemaps/assets/77501/6a935777-21b5-4d5f-9823-e8235a6323b2

[pperzyna]

This is amazing!

[sonarcloud[bot]]

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