add projectByName function

ktor/client/build.gradle

@@ -41,7 +41,7 @@ kotlin {
                 if ((project.hasProperty('RELEASE_MODE') && project.property('RELEASE_MODE') == "true") || System.getenv('RELEASE_MODE') == "true") {
                     api "com.insanusmokrassar:postssystem.ktor.common:$core_version"
                 } else {
-                    api project(":ktor:postssystem.ktor.common")
+                    api projectByName("postssystem.ktor.common")
                 }
 
                 api "io.ktor:ktor-client-core:$ktor_version"

ktor/common/src/commonMain/kotlin/com/insanusmokrassar/postssystem/ktor/CollectionsSerializers.kt

@@ -0,0 +1,6 @@
+package com.insanusmokrassar.postssystem.ktor
+
+import kotlinx.serialization.builtins.SetSerializer
+import kotlinx.serialization.builtins.serializer
+
+val setIdsSerializer = SetSerializer(String.serializer())