Add new modules to standard library

modules/io/src/main/kotlin/io/smnp/ext/io/IoModule.kt

@@ -2,9 +2,10 @@ package io.smnp.ext.io
 
 import io.smnp.ext.NativeModuleProvider
 import io.smnp.ext.io.function.PrintlnFunction
+import io.smnp.ext.io.function.ReadFunction
 import org.pf4j.Extension
 
 @Extension
 class IoModule : NativeModuleProvider("smnp.io") {
-    override fun functions() = listOf(PrintlnFunction())
+    override fun functions() = listOf(PrintlnFunction(), ReadFunction())
 }

modules/io/src/main/kotlin/io/smnp/ext/io/function/ReadFunction.kt

@@ -0,0 +1,18 @@
+package io.smnp.ext.io.function
+
+import io.smnp.callable.function.Function
+import io.smnp.callable.function.FunctionDefinitionTool
+import io.smnp.callable.signature.Signature.Companion.simple
+import io.smnp.type.enumeration.DataType.STRING
+import io.smnp.type.matcher.Matcher.Companion.ofType
+import io.smnp.type.matcher.Matcher.Companion.optional
+import io.smnp.type.model.Value
+
+class ReadFunction : Function("read") {
+   override fun define(new: FunctionDefinitionTool) {
+      new function simple(optional(ofType(STRING))) body { _, arguments ->
+         arguments.getOrNull(0)?.let { print(it.value!!) }
+         Value.string(readLine() ?: "")
+      }
+   }
+}