Add DoubleDouble.swift to CMakeLists

Author: stephentyrone

Sources/FoundationEssentials/CMakeLists.txt

@@ -21,6 +21,7 @@ add_library(FoundationEssentials
     ComparisonResult.swift
     Date.swift
     DateInterval.swift
+    DoubleDouble.swift
     FoundationEssentials.swift
     IndexPath.swift
     LockedState.swift