Organise game content packages and scripts

[GregHib]

Alternative change to #584 as the benefits didn't outweigh the costs.

• Arranged package layouts to follow a quest > area > skill > entity structure
• Moved all scripts into "content" package
• Removed worlds.gregs.voidps package prefix to follow kotlins directory structure guidelines
• Replace ClassGraph with a gradle task to find kotlin scripts for faster load times (-600ms)

[codecov]

Codecov Report

Attention: Patch coverage is 44.44444% with 30 lines in your changes missing coverage. Please review.

Project coverage is 34.89%. Comparing base (5910410) to head (f8ac857).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
game/src/main/kotlin/ContentLoader.kt	45.16%	14 Missing and 3 partials ⚠️
...n/content/area/misthalin/draynor_village/Leela.kts	25.00%	3 Missing ⚠️
...ntent/area/misthalin/varrock/palace/SurokMagis.kts	25.00%	3 Missing ⚠️
...kotlin/content/entity/npc/combat/magic/Wizards.kts	0.00%	1 Missing and 2 partials ⚠️
game/src/main/kotlin/Main.kt	0.00%	1 Missing ⚠️
...otlin/content/entity/npc/combat/ranged/Archers.kts	66.66%	0 Missing and 1 partial ⚠️
...main/kotlin/content/entity/npc/spawn/NPCSpawns.kts	75.00%	0 Missing and 1 partial ⚠️
...n/kotlin/content/entity/obj/spawn/ObjectSpawns.kts	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
...n/world/gregs/voidps/engine/data/AccountManager.kt	72.83% <ø> (ø)
game/src/main/kotlin/GameModules.kt	64.28% <ø> (ø)
game/src/main/kotlin/GameTick.kt	59.52% <ø> (ø)
...rc/main/kotlin/content/achievement/AntiqueLamp.kts	16.66% <ø> (ø)
.../main/kotlin/content/achievement/ExplorersRing.kts	15.38% <ø> (ø)
...lin/content/achievement/LumbridgeBeginnerTasks.kts	59.40% <ø> (ø)
...e/src/main/kotlin/content/achievement/TaskList.kts	15.78% <ø> (ø)
...src/main/kotlin/content/achievement/TaskSystem.kts	42.75% <ø> (ø)
game/src/main/kotlin/content/achievement/Tasks.kt	25.35% <ø> (ø)
...in/content/activity/shooting_star/ShootingStar.kts	6.32% <ø> (ø)
... and 281 more

... and 638 files with indirect coverage changes

@@             Coverage Diff              @@
##               main     #602      +/-   ##
============================================
- Coverage     34.90%   34.89%   -0.01%     
- Complexity     4887     4889       +2     
============================================
  Files          1338     1339       +1     
  Lines         47101    47120      +19     
  Branches       9500     9502       +2     
============================================
+ Hits          16441    16443       +2     
- Misses        27278    27293      +15     
- Partials       3382     3384       +2     

Components	Coverage Δ
Content	28.60% <44.44%> (-0.02%)	⬇️
Engine	43.49% <ø> (ø)
Network	71.85% <ø> (ø)