Feature/streamline settings (#1614)

* Cleanup graphql setting mutation

* Validate values read from config

* Generate server-reference.conf files from ServerConfig

* Remove unnecessary enum value handling in config value update

Commit df0078b725 introduced the usage of config4k, which handles enums automatically. Thus, this handling is outdated and not needed anymore

* Generate gql SettingsType from ServerConfig

* Extract settings backup logic

* Generate settings backup files

* Move "group" arg to second position

To make it easier to detect and have it at the same position consistently for all settings.

* Remove setting generation from compilation

* Extract setting generation code into new module

* Extract pure setting generation code into new module

* Remove generated settings files from src tree

* Force each setting to set a default value

server/server-config-generate/build.gradle.kts

@@ -0,0 +1,62 @@
+plugins {
+    id(
+        libs.plugins.kotlin.jvm
+            .get()
+            .pluginId,
+    )
+}
+
+dependencies {
+    // Core Kotlin
+    implementation(kotlin("stdlib-jdk8"))
+    implementation(kotlin("reflect"))
+    
+    // Config handling
+    implementation(libs.config)
+    implementation(libs.config4k)
+    
+    // Logging
+    implementation(libs.slf4japi)
+    implementation(libs.kotlinlogging)
+    
+    // Serialization
+    implementation(libs.serialization.json)
+    implementation(libs.serialization.protobuf)
+    
+    // Depend on server-config module for access to ServerConfig and SettingsRegistry
+    implementation(projects.server.serverConfig)
+}
+
+tasks {
+    register<JavaExec>("generateSettings") {
+        group = "build setup"
+        description = "Generates settings from ServerConfig"
+
+        dependsOn(compileKotlin)
+
+        // Use this module's classpath which includes server-config as dependency
+        classpath = sourceSets.main.get().runtimeClasspath
+        
+        mainClass.set("suwayomi.tachidesk.server.settings.generation.SettingsGeneratorKt")
+
+        // Get reference to server project for file paths
+        val serverProject = project(":server")
+        
+        // Set working directory to the server module directory
+        workingDir = serverProject.projectDir
+        
+        inputs.files(
+            serverProject.sourceSets.main.get().allSource.filter {
+                it.name.contains("ServerConfig") || it.name.contains("Settings")
+            },
+        )
+        
+        outputs.files(
+            serverProject.file("build/generated/src/main/resources/server-reference.conf"),
+            serverProject.file("build/generated/src/test/resources/server-reference.conf"),
+            serverProject.file("build/generated/src/main/kotlin/suwayomi/tachidesk/graphql/types/SettingsType.kt"),
+            serverProject.file("build/generated/src/main/kotlin/suwayomi/tachidesk/manga/impl/backup/proto/models/BackupServerSettings.kt"),
+            serverProject.file("build/generated/src/main/kotlin/suwayomi/tachidesk/manga/impl/backup/proto/handlers/BackupSettingsHandler.kt"),
+        )
+    }
+}