Extract interface from implementation in case of Environment and ModuleRegistry

app/src/main/kotlin/io/smnp/environment/DefaultEnvironment.kt

@@ -0,0 +1,20 @@
+package io.smnp.environment
+
+import io.smnp.ext.DefaultModuleRegistry
+import io.smnp.type.module.Module
+
+class DefaultEnvironment : Environment {
+    private val rootModule = Module("<root>")
+    private val loadedModules = mutableListOf<String>()
+
+    override fun loadModule(path: String) {
+        DefaultModuleRegistry.requestModulesForPath(path).forEach {
+            rootModule.addSubmodule(it)
+            loadedModules.add(path)
+        }
+    }
+
+    override fun printModules(printContent: Boolean) {
+        rootModule.pretty(printContent)
+    }
+}