Add support for modules dependencies

app/src/main/kotlin/io/smnp/ext/DefaultModuleRegistry.kt

@@ -1,21 +1,22 @@
 package io.smnp.ext
 
-import io.smnp.type.module.Module
 import org.pf4j.DefaultPluginManager
 
 object DefaultModuleRegistry : ModuleRegistry {
-    private val modules = mutableListOf<Pair<String, Module>>()
+    private val modules = mutableMapOf<String, ModuleDefinition>()
     init {
         val pluginManager = DefaultPluginManager()
         pluginManager.loadPlugins()
         pluginManager.startPlugins()
 
         pluginManager.getExtensions(ModuleDefinition::class.java).forEach {
-            modules.add(it.path to it.module())
+            modules[it.path] = it
         }
     }
 
-    override fun requestModulesForPath(path: String): List<Module> {
-        return modules.filter { it.first == path }.map { it.second }
+    override fun requestModulesForPath(path: String): ModuleDefinition {
+        return modules[path] ?: throw RuntimeException("Module $path not found")
     }
+
+    override fun registeredModules() = modules.keys.toList()
 }