Adds an event id hash check that doesn't create a separate bytearray to compare between the incoming hex from the relay and the recalculated byte array from SHA256.

benchmark/src/androidTest/java/com/vitorpamplona/quartz/benchmark/HexBenchmark.kt

@@ -43,6 +43,13 @@ class HexBenchmark {
         fr.acinq.secp256k1.Hex
             .decode(hex)
 
+    @Test
+    fun hexIsEqual() {
+        r.measureRepeated {
+            assert(Hex.isEqual(hex, bytes))
+        }
+    }
+
     @Test
     fun hexDecodeOurs() {
         r.measureRepeated {