Add support for ConfigMap-based commands to smnp.audio.synth module

api/src/main/kotlin/io/smnp/util/config/ConfigMap.kt

@@ -6,10 +6,17 @@ import io.smnp.type.model.Value
 class ConfigMap(private val map: Map<Value, Value>) {
    private val raw by lazy { map.map { (key, value) -> key.unwrap() to value }.toMap() as Map<String, Value> }
 
+   val entries: Set<Map.Entry<String, Value>>
+      get() = raw.entries
+
    operator fun get(key: String): Value {
       return raw[key] ?: throw ShouldNeverReachThisLineException()
    }
 
+   fun getOrNull(key: String): Value? {
+      return raw[key]
+   }
+
    fun <T> getUnwrappedOrDefault(key: String, default: T): T {
       return raw[key]?.unwrap() as T ?: default
    }

api/src/main/kotlin/io/smnp/util/config/ConfigMapSchema.kt

@@ -20,11 +20,13 @@ class ConfigMapSchema {
       return this
    }
 
-   fun parse(config: Value): ConfigMap {
+   fun parse(config: Value, vararg cascade: ConfigMap): ConfigMap {
       val configMap = config.value as Map<Value, Value>
-
       return ConfigMap(parameters.mapNotNull { (name, parameter) ->
-         val value = configMap[Value.string(name)]
+         val key = Value.string(name)
+
+         val value = configMap[key]
+            ?: cascade.flatMap { it.entries } .firstOrNull { it.key == name } ?.value
             ?: if (parameter.required) throw CustomException("The '$name' parameter of ${parameter.matcher} is required")
             else parameter.default