working clang-format

clang-format is a code formatter, not a compiler tool.
It:

Rewrites your C++ source code
Adjusts indentation, spacing, line breaks, brace style, etc and makes
code look consistent

cplusplus/learning/tut1/main.cpp

@@ -1,12 +1,9 @@
-#include <iostream>
 #include <fmt/core.h>
-
+#include <iostream>
 
 int main() {
     std::cout << "Hello from tut1\n";
     fmt::print("Hello from {} using fmt {}\n", "tut1", FMT_VERSION);
 
-    
     return 0;
 }
-