Refactoring of roles and notifications about antagonist assignment (#16864)

* Refactoring of antagonist roles and notifications about antagonist role assignment.
Refactoring of traitor assignment methods and bug fixing.

* Announcement files moved, code is adjusted to new revision

* Play to entity changed to play to global cause of mono audio restrictions.

* Path to audio files changed to sound specifiers, unique alerts for each role.

* Uncommited changes

* New alert sounds for each antag role.

* PR review fixes

* Antagonist role assignment sound notifications moved to Systems, sounds moved to Components.

* License update

* Fixed naming and redundant parameters

---------

Co-authored-by: Титов Вячеслав Витальевич <rincew1nd@yandex.ru>

Resources/Audio/Ambience/Antag/attributions.yml

@@ -0,0 +1,12 @@
+- files: ["nukeops_start.ogg"]
+  license: "CC-BY-NC-SA-3.0"
+  copyright: "Taken from TG station."
+  source: "https://github.com/tgstation/tgstation/commit/827967c9650c23af64280ad1491405fed8f644c5"
+- files: ["pirate_start.ogg"]
+  license: "CC-BY-NC-SA-3.0"
+  copyright: "Made by @MIXnikita#1474 (Discord) for SS14"
+  source: "https://github.com/SerbiaStrong-220/space-station-14/blob/master/Resources/Audio/Ambience/Antag/pirate_start.ogg"
+- files: ["zombie_start.ogg"]
+  license: "CC-BY-NC-SA-3.0"
+  copyright: "Made by @MIXnikita#1474 (Discord) for SS14"
+  source: "https://github.com/SerbiaStrong-220/space-station-14/blob/master/Resources/Audio/Ambience/Antag/zombie_start.ogg"