Airsoft calculator

The application is used to store data regarding ASG replica measurements.

Functions:
- Saving projectile muzzle velocity measurements.
- Storage of measurements in the context of a replica.
- Calculation of averages of given measurements according to the weight of the ball.
- Calculation of predicted muzzle velocity based on kinetic energy measured on a ball weighing 0.2g
- Calculator converting muzzle velocity relative to other weights.