* Confirm the path segment being modified is an `enum`
* Check whether type has type param before suggesting changing `Self`
* Wording changes
* Add clarifying comments
* Suggest removing args from `Self` if the type doesn't have type params

The computation is actually much simpler, and can be done by directly
fetching the HIR for the `FnDecl` and its generics.

…bank

Compute `is_late_bound_map` query separately from lifetime resolution

This query is actually very simple, and is only useful for functions and method.  It can be computed directly by fetching the HIR, with no need to embed it within the lifetime resolution visitor.

Based on rust-lang#96296

Provide more context when denying invalid type params

…-DPC

Add more eslint checks

A new batch of eslint rules:

 * [no-fallthrough](https://eslint.org/docs/rules/no-fallthrough)
 * [no-invalid-regexp](https://eslint.org/docs/rules/no-invalid-regexp)
 * [no-import-assign](https://eslint.org/docs/rules/no-import-assign)
 * [no-self-compare](https://eslint.org/docs/rules/no-self-compare)
 * [no-template-curly-in-string](https://eslint.org/docs/rules/no-template-curly-in-string)
 * [block-scoped-var](https://eslint.org/docs/rules/block-scoped-var)
 * [guard-for-in](https://eslint.org/docs/rules/guard-for-in)
 * [no-alert](https://eslint.org/docs/rules/no-alert)

r? ``@notriddle``