Ballistics - Add 12.7x108mm APDS AB values

[Laid3acK]

When merged this pull request will:

• Add 12.7x108mm APDS advanced ballistics values based on Chinese 12.7x108mm APDS Type 54.
• Without real datas, G1 ICAO ballistic coefficient according to vanilla B_127x108_APDS airFriction -0.00036, elevation gap 0.1 - 0.2 mRad until 2700 meters: Range Cards in-game.
• Add 12.7x108mm APDS AtragMx preset calibrated with Strelok Pro.

AtragMx GunList will need to be refreshed with the Eden Editor Debug Console, execute:

• call ace_atragmx_fnc_clear_user_data (LOCAL EXEC)
  or
• call ace_atragmx_fnc_initGunList (LOCAL EXEC)

/!\ All private AtragMx GunList values must be saved manually before.

• Default Ballistic vs Advanced Ballistics (ICAO) remaining velocities:

• Default Ballistic vs Advanced Ballistics (ICAO) elevations:

• Default Ballistic vs Advanced Ballistics (ICAO) times of flight:

(aka splendid Wiki Reforger style)

• Terminal ballistic checked first with the official Arma 3 Diagnostics Exe and NATO, CSAT, AAF armored cars, APCs and tanks.
  • Beginning of penetration approximately at 1500m, full perforation approximately at 1000m (armored cars).
  • Same DB and AB (ICAO) remaining velocity at 1500m (617m/s).
  • Remaining velocities at 1000m : DB 739m/s - AB (ICAO) 749m/s (gap 1.3%).

(same time of flight 2.76s at 2000m, same elevation 20.6mRad at 2500m)

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