Scripts/Scarlet Enclave: Grand Theft Palomino

[Sorikoff]

Changes proposed:
Based on #20897 quest Grand Theft Palomino implementation.

Target branch(es): 3.3.5

Issues addressed: Closes #20844

Tests performed: Does build, works-in-game

Known issues and TODO list:

• Dark Rider of Acherus ignores walk state when chasing ([3.3.5] Creatures always run when chasing #20938). This is minor issue, and I think PR can be merged before the actual fix.
• Creature keep following the leader once charmed (Core/Creature: Creature keep following the leader once charmed #21731). The same as above.

[ghost]

I am glad to see the script become event driven instead of a bunch of loose (and often vulnerable to change) timer calls.

[burbur]

Nice one!
Glad to see you have followed the original work and finished the script with some improvements. Thank you!

I've abandoned the pull request because I could not follow every (right) modification request from trinity staff due to work duties! :)
I apologize with the people who were rewieving it because I've forgot about it after a while.

[jackpoz]

@Keader any change left to do before merging this ?

[jackpoz]

Thanks for the PR :)