Add JeremyEspresso/swift-h3 to community bindings

Author: JeremyEspresso

website/docs/community/bindings.md

@@ -141,3 +141,6 @@ As a C library, bindings can be made to call H3 functions from different program
 - [jchotard/h3spark](https://github.com/JosephChotard/h3spark) (4.x)
 - [kevinschaich/h3-pyspark](https://github.com/kevinschaich/h3-pyspark) (3.x)
 
+## Swift
+- [JeremyEspresso/swift-h3](https://github.com/JeremyEspresso/swift-h3) (4.x)
+