move permutive js to the right place

Author: ChristianPavilonis

crates/js/lib/src/permutive/index.ts renamed to crates/js/lib/src/integrations/permutive.ts

@@ -95,5 +95,6 @@ function waitForPermutiveSDK(callback: () => void, maxAttempts = 50) {
   check();
 }
 
-// Wait for SDK to load, then install shim
-waitForPermutiveSDK(() => installPermutiveShim());
+if (typeof window !== 'undefined') {
+  waitForPermutiveSDK(() => installPermutiveShim());
+}