refactor to have state and add test

main.jai

@@ -0,0 +1,10 @@
+main :: () {
+    args := get_command_line_arguments();
+    assert(args.count == 2, "The file name must be passed as a CLI argument");
+
+    file_name := args[1];
+    run_editor(file_name);
+}
+
+#load "edit.jai";
+#import "Basic";