feat(random-race): randomization of races and related morph based on gender

[Helias]

Changes proposed

Randomize the races of the player during the change faction.

HOW TO TEST

• join battleground with 2 players of the same faction
• check if the second one gets a random race which respects his class
• leave battleground and join again to see if the player get a different race

Note: if you are a human warrior and join battleground as horde, you can't be Blood Elf because a BE can't be warrior, but probably you will be randomized for all other races.

Hint: from worldserver.conf remove the deserter buff

[Helias]

Tested in-game using DEATH KNIGHT mainly, I meet all corresponds races, so the randomization should work correctly.

(I tested also with different classes).

[Kitzunu]

This is cool :)

You can also remove the deserter debuff with .unaura ID/all and the deserter command if you don't want to change in conf :)

[Helias]

What about merge? @Winfidonarleyan

@IntelligentQuantum, @Kitzunu, did you test this PR?

[Kitzunu]

No I have no time to test big stuff for the next few weeks

[IntelligentQuantum]

@Helias works fine for me

[Helias]

Thank you @IntelligentQuantum! did you test with several races?

[IntelligentQuantum]

Thank you @IntelligentQuantum! did you test with several races?

Yeah, Human warrior - Blood elf paladin - Orc hunter - Gnome mage