Add `unnecessary_literal_unwrap` lint Add lint for more unnecessary unwraps and suggest fixes for them. Fixes #10352 - [x] Followed [lint naming conventions][lint_naming] - [x] Added passing UI tests (including committed `.stderr` file) - [x] `cargo test` passes locally - [x] Executed `cargo dev update_lints` - [x] Added lint documentation - [x] Run `cargo dev fmt` r? `@llogiq` --- changelog: New lint [`unnecessary_literal_unwrap`] [#10358](https://github.com/rust-lang/rust-clippy/pull/10358) <!-- changelog_checked -->