Add swift node content (#6325)

* Add content under Swift Basics section on the iOS roadmap

* Update src/data/roadmaps/ios/content/swift-basics@fboebSmquyJyozsMRJDtK.md

---------

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/data/roadmaps/ios/content/swift-basics@fboebSmquyJyozsMRJDtK.md

@@ -1 +1,8 @@
-# Swift Basics
+# Swift Basics
+
+
+Swift is a powerful and intuitive programming language for macOS, iOS, watchOS, and tvOS. Writing Swift code is interactive and fun, the syntax is concise yet expressive, and Swift includes modern features developers love. Swift code is safe by design, yet also produces software that runs lightning-fast.
+
+Learn more from the following resources:
+
+- [@official@Tour of Swift](https://docs.swift.org/swift-book/documentation/the-swift-programming-language/guidedtour)