chore: use iwyu on cpu_scheduling_algorithms/**.cpp

Author: realstealthninja

cpu_scheduling_algorithms/fcfs_scheduling.cpp

@@ -9,16 +9,17 @@
  * @author [Pratyush Vatsa](https://github.com/Pratyush219)
  */
 
-#include <algorithm>      /// for sorting
-#include <cassert>        /// for assert
-#include <cstdint>        /// for integral typedefs
-#include <cstdlib>        /// random number generation
-#include <ctime>          /// for time
-#include <iomanip>        /// for formatting the output
-#include <iostream>       /// for IO operations
-#include <queue>          /// for std::priority_queue
-#include <unordered_set>  /// for std::unordered_set
-#include <vector>         /// for std::vector
+#include <algorithm>      // for sort
+#include <cassert>        // for assert
+#include <cstdint>        // for uint32_t
+#include <cstdlib>        // for rand, srand, size_t
+#include <ctime>          // for time
+#include <iomanip>        // for setw, operator<<, _Setw, setprecision, _Set...
+#include <iostream>       // for basic_ostream, char_traits, operator<<, left
+#include <queue>          // for priority_queue
+#include <unordered_set>  // for unordered_set, operator==
+#include <vector>         // for vector, operator==, allocator
+#include <tuple>          // for tuple, get, make_tuple, operator==, swap
 
 using std::cin;
 using std::cout;