added commandline arguments and deleted target

src/headers/args.h

@@ -0,0 +1,12 @@
+#ifndef ARGS_H_
+#define ARGS_H_
+
+typedef struct {
+  int width;
+  int height;
+  int sleep_ms;
+} Arguments;
+
+Arguments cmd_args(int argc, char** argv);
+
+#endif // ARGS_H_