Step 121: add import/external module AST concepts

editor/src/ast/Import.h

@@ -0,0 +1,18 @@
+#pragma once
+#include "ASTNode.h"
+
+class Import : public ASTNode {
+public:
+    std::string moduleName;
+    std::string alias;
+    std::string importKind; // "module", "include", "require"
+
+    Import() { conceptType = "Import"; }
+    Import(const std::string& id, const std::string& module,
+           const std::string& kind = "module",
+           const std::string& alias = "")
+        : moduleName(module), alias(alias), importKind(kind) {
+        this->id = id;
+        this->conceptType = "Import";
+    }
+};