add KtorPipelineStepsHolder#onRequestReturnResult

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/Ktor/KtorRequestsExecutor.kt

@@ -75,7 +75,8 @@ class KtorRequestsExecutor(
     }
 
     override suspend fun <T : Any> execute(request: Request<T>): T {
-        return safely(
+        return runCatching {
+            safely(
                 { e ->
                     pipelineStepsHolder.onRequestException(request, e) ?.let { return@safely it }
 
@@ -90,6 +91,7 @@ class KtorRequestsExecutor(
                     } else {
                         e
                     }
+
                 }
             ) {
                 pipelineStepsHolder.onBeforeSearchCallFactory(request, callsFactories)
@@ -116,6 +118,9 @@ class KtorRequestsExecutor(
                     } ?: pipelineStepsHolder.onRequestResultAbsent(request, callsFactories) ?: error("Can't execute request: $request")
                 }
             }
+        }.let {
+            pipelineStepsHolder.onRequestReturnResult(it, request, callsFactories)
+        }
     }
 
     override fun close() {

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/KtorPipelineStepsHolder.kt

@@ -60,4 +60,14 @@ interface KtorPipelineStepsHolder {
         request: Request<T>,
         callsFactories: List<KtorCallFactory>
     ): T? = null
+
+    /**
+     * This step will be called when the [result] has been retrieved (or exception has happened). If returns value -
+     * that value will be returned from [dev.inmo.tgbotapi.bot.RequestsExecutor.execute] instead
+     */
+    suspend fun <T: Any> onRequestReturnResult(
+        result: Result<T>,
+        request: Request<T>,
+        callsFactories: List<KtorCallFactory>
+    ): T = result.getOrThrow()
 }