add a signer result interface for remote signer

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip46RemoteSigner/signer/SignerResult.kt

@@ -0,0 +1,49 @@
+/**
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.nip46RemoteSigner.signer
+
+import com.vitorpamplona.quartz.nip01Core.core.Event
+
+sealed interface SignerResult<T : IResult> {
+    sealed interface RequestAddressed<T : IResult> : SignerResult<T> {
+        class Successful<T : IResult>(
+            val result: T,
+        ) : RequestAddressed<T>
+
+        class Rejected<T : IResult> : RequestAddressed<T>
+
+        class TimedOut<T : IResult> : RequestAddressed<T>
+
+        class ReceivedButCouldNotPerform<T : IResult>(
+            val message: String? = null,
+        ) : RequestAddressed<T>
+
+        class ReceivedButCouldNotParseEventFromResult<T : IResult>(
+            val eventJson: String,
+        ) : RequestAddressed<T>
+
+        class ReceivedButCouldNotVerifyResultingEvent<T : IResult>(
+            val invalidEvent: Event,
+        ) : RequestAddressed<T>
+    }
+}
+
+interface IResult