Both are apart of the toolchain now, no external dependencies required: `swift format` and `swift format lint` to access them

SwiftLint and SwiftFormat are different tools than swift-format, which is what is included with Swift itself. swift-format is less capable than either, or similar tools from other ecosystems. Personally I use the other two. And they don't usually require updates for new language versions, and when they do, they update quickly, as they aren't part of the Swift toolchain and subject to its glacial release process.