Create some new standard library modules

modules/debug/src/main/kotlin/io/smnp/ext/function/CallStackFunction.kt

@@ -0,0 +1,15 @@
+package io.smnp.ext.function
+
+import io.smnp.callable.function.Function
+import io.smnp.callable.function.FunctionDefinitionTool
+import io.smnp.callable.signature.Signature
+import io.smnp.type.model.Value
+
+class CallStackFunction : Function("callstack") {
+   override fun define(new: FunctionDefinitionTool) {
+      new function Signature.simple() body { env, _ ->
+         env.printCallStack()
+         Value.void()
+      }
+   }
+}