[Skill Caps] Remove from shared memory and simplify (#4069)

* [Skill Caps] Remove from shared memory and simplify

- Removes Skill Caps loading from shared memory and puts it into zone.
- Adds `id` column to `skill_caps`.
- Remove primary keys and use `id` as primary key.
- Add unique index using `skill_id`, `class_id`, `level`, and `cap`.
- Renames `class` to `class_id` in `skill_caps` table.
- Renames `skillID` to `skill_id` in `skill_caps` table.
- Regenerates Skill Caps repository.
- Adds `#reload skill_caps` to reload skill caps in real time.

* Update groups.cpp

* Update groups.cpp

zone/CMakeLists.txt

@@ -166,6 +166,7 @@ SET(zone_sources
     zone_event_scheduler.cpp
     zone_npc_factions.cpp
     zone_reload.cpp
+    zone_skill_caps.cpp
     zoning.cpp
 )