Extract sanitization logic into an extensions + add tests (#827)

Co-authored-by: jack <212554440+jackjackbits@users.noreply.github.com>

localPackages/BitLogger/Package.swift

@@ -18,6 +18,10 @@ let package = Package(
         .target(
             name: "BitLogger",
             path: "Sources"
+        ),
+        .testTarget(
+            name: "BitLoggerTests",
+            dependencies: ["BitLogger"]
         )
     ]
 )