apply clang-format to all headers with some exceptions

src/command.h

@@ -20,10 +20,10 @@ namespace LAMMPS_NS {
 
 class Command : protected Pointers {
  public:
-  Command(class LAMMPS *lmp) : Pointers(lmp) {};
+  Command(class LAMMPS *lmp) : Pointers(lmp){};
   virtual void command(int, char **) = 0;
 };
 
-}
+}    // namespace LAMMPS_NS
 
 #endif