simple example of clangd working

.clangd

@@ -0,0 +1,2 @@
+CompileFlags:
+  Add: [-I/usr/include/gstreamer-1.0, -I/usr/include/glib-2.0, -I/usr/lib/x86_64-linux-gnu/glib-2.0/include]

src/Main.cpp

@@ -1,5 +1,7 @@
 #include<iostream>
 
+#include <gst/gst.h>
+
 int main()
 {
   std::cout << "Hello World!" << std::endl;