Add state cleanup for delegated and pure. There doesn't seem to be a easy way to clean js state

multiplatform-crypto-delegated/src/jsMain/kotlin/com/ionspin/kotlin/crypto/JsSodiumInterface.kt

@@ -52,5 +52,9 @@ interface JsSodiumInterface {
     fun crypto_secretstream_xchacha20poly1305_init_pull(header: Uint8Array, key: Uint8Array) : dynamic
     fun crypto_secretstream_xchacha20poly1305_pull(state: dynamic, ciphertext: Uint8Array, additionalData: Uint8Array) : dynamic
 
+    //util
+    fun memzero(array: Uint8Array)
+
+
 
 }

multiplatform-crypto-delegated/src/jsMain/kotlin/com/ionspin/kotlin/crypto/authenticated/XChaCha20Poly1305Delegated.kt

@@ -121,6 +121,10 @@ actual class XChaCha20Poly1305Delegated internal actual constructor() {
         return decrypted.toUByteArray()
     }
 
+    actual fun cleanup() {
+        //TODO JS cleanup
+    }
+
 
 
 }