Add !time command to shift server time for banner switching

[epicmsl]

Add !time command to switch gacha banners by shifting server time.

Since banner data is client-side and cannot be modified, this command shifts the server's internal clock so isActiveAt() returns different active banners. No PC time is changed.
Subcommands: set , offset , reset, list.
First make sure the client is close, why? to refresh fast ... if client is opened you have to wait long.
in terminal/cmd/console use !time list to check which banner you want target, here example:
ID Banner Epoch

---

10144 Chitose 1760990400 (2025-10-20 21:00:00)
10155 Shia 1761710400 (2025-10-29 05:00:00)
10119 Nanoha 1762920000 (2025-11-12 05:00:00)
10134 Fuyuka 1763524800 (2025-11-19 05:00:00)
10149 Gerie 1764734400 (2025-12-03 05:00:00)
10133 Nazuka 1765339200 (2025-12-10 05:00:00)
10158 Snowish Laru 1766548800 (2025-12-24 05:00:00)
10125 Freesia 1767153600 (2025-12-31 05:00:00)
10110 Firenze 1768363200 (2026-01-14 05:00:00)
10135 Mistique 1769572800 (2026-01-28 05:00:00)
10159 Springseek Cor 1770177600 (2026-02-04 05:00:00)
10141 Chixia 1771387200 (2026-02-18 04:00:00)
10143 Wraith 1771992000 (2026-02-25 04:00:00)
10132 Minova 1773201600 (2026-03-11 04:00:00)
10130 Donna 1773806400 (2026-03-18 04:00:00)
10156 Nazuna 1775016000 (2026-04-01 05:00:00)
10145 Otoha 1776398400 (2026-04-17 05:00:00)
11144 Chitose 1777608000 (2026-05-01 05:00:00)
10115 Firefly 1778817600 (2026-05-15 05:00:00)
11155 Shia 1779854400 (2026-05-27 05:00:00)

!time set ... copy epoch you want and use (example):
!time set 1765339200 after that open the client and check banner if Nazuka is on.
!time to check Current server time.
!time reset to back the original time.

[Melledy]

Not a big fan of the method used here for multiple reasons:

1. Nebula::getCurrentServerTime() also affects stuff such as server daily reset
2. Names of trekkers should not be included in the source code for various copyright related reasons.

I think a better way to do this would be offset the server timestamp here instead:

Nebula/src/main/java/emu/nebula/game/player/Player.java

Line 1129 in 4baca92

.setServerTs(Nebula.getCurrentServerTime())

Also for banner names, it would be better to pull the names from resources/language/{{language_key}}/Gacha.json as that would not require us to put trekker names or whatnot in the source code, with the added benefit of using the proper language for the server.

[epicmsl]

You absolutely right, i didn't think that way ... i only wanted way to bring all banner to pull instead getting char trought commands, its gacha game after all.
well ... you can close PR, i dont wanna DMCA Takedown for this hidden gem.