Add DART target face

[DreierF]

The rules are exactly the same as the traditional dart game but on a more large target with some specifics rules :

• the game is a 3 vs 3 archers,

• maximum 1 compound in a team, 

• the compound cannot begin or end the game, 

• to start a team need to get a "double" (exterior border) 

• each team starts with 501 points and need to reach 0 (exactly) 

• the team can end a game only by making a double so at minimum possible, the team have to get a double one. 

Each archer throw 2 arrows max, 6 arrows in a row by team. 

Size: 80 cm

Distance : 13,74 meters (may vary) 

An actual dart target image : https://www.casalsport.com/img/W/CAS/ST/SC/57/6/SC576/SC576_ST.jpg

The rules are complex for the app so even if you only add the possible points it will be great! 

Points possibles are:

From 1 to 20 : 1×1, 2×1, 3×1, 2×1, 2×2.....

Center white : 50pts

Center black : 2×50