[FEAT] Add Newton's Law of Gravitation algorithm

Author: Priyanshu1303d

src/main/java/com/thealgorithms/physics/Gravitation.java

@@ -63,4 +63,4 @@ public static double calculateCircularOrbitVelocity(double centralMass, double r
         }
         return Math.sqrt((GRAVITATIONAL_CONSTANT * centralMass) / radius);
     }
-}
+}