server Update Mangos to C++17 and new Eluna Multistate implementation

This will probably need some rudimentary testing, but it compiles and runs on Windows at least.

This change is

Mar 10 '24 20:03 Foereaper

:x: Build Mangos ZERO Server 22.04.19-iwhpwwbr failed (commit https://github.com/mangoszero/server/commit/7e9708d329 by @Foereaper)

Mar 10 '24 20:03 AppVeyorBot

:x: Build Mangos ZERO Server 22.04.19-uklhqhlw failed (commit https://github.com/mangoszero/server/commit/e619fdd4a3 by @Foereaper)

Mar 10 '24 20:03 AppVeyorBot

:x: Build Mangos ZERO Server 22.04.19-qooxykii failed (commit https://github.com/mangoszero/server/commit/66a4e998a4 by @Foereaper)

Mar 10 '24 21:03 AppVeyorBot

:x: Build Mangos ZERO Server 22.04.19-rudmfbpq failed (commit https://github.com/mangoszero/server/commit/1a2b2d05fa by @Foereaper)

Mar 10 '24 21:03 AppVeyorBot

:x: Build Mangos ZERO Server 22.04.19-qqkrvgvv failed (commit https://github.com/mangoszero/server/commit/1900f47e49 by @Foereaper)

Mar 10 '24 22:03 AppVeyorBot

:white_check_mark: Build Mangos ZERO Server 22.04.19-fynqljre completed (commit https://github.com/mangoszero/server/commit/069de7db3b by @Foereaper)

Mar 10 '24 22:03 AppVeyorBot

:white_check_mark: Build Mangos ZERO Server 22.04.19-ptjlcxyj completed (commit https://github.com/mangoszero/server/commit/f8e96e3044 by @Foereaper)

Mar 11 '24 18:03 AppVeyorBot

:white_check_mark: Build Mangos ZERO Server 22.04.19-gqljwbcc completed (commit https://github.com/mangoszero/server/commit/ddfe01d9e1 by @Foereaper)

Mar 11 '24 19:03 AppVeyorBot