Address Build Warnings and Cleanup (#707)

* Address build warnings and cleanup

* Actual name of who defined the protocol

* Remove uneeded detekt supression

* GraphQL Before-After cleanup

* Lint

* Cleanup unused functions

* Fix some discrepancies with the 1.5 source api and fix lang exception

server/build.gradle.kts

@@ -1,4 +1,5 @@
 import de.undercouch.gradle.tasks.download.Download
+import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
 import java.time.Instant
 
 plugins {
@@ -142,6 +143,15 @@ tasks {
         }
     }
 
+    withType<KotlinJvmCompile> {
+        kotlinOptions {
+            freeCompilerArgs +=
+                listOf(
+                    "-opt-in=kotlinx.serialization.ExperimentalSerializationApi",
+                )
+        }
+    }
+
     named<Copy>("processResources") {
         duplicatesStrategy = DuplicatesStrategy.INCLUDE
         mustRunAfter("downloadWebUI")