broad updates to wooden golem, gnarling chieftain, harvester

gnarling fort:

• chance to spawn wooden golem at velorite huts
• golems and gnarlings at chieftain hut are more spatially distributed
• balance adjustments to number of gnarlings at huts and towers

golem, chieftain, harvester:

• pathing to comfortable attack distance (rather than directly in front of player)
• misc. refactoring of attack code

wooden golem:

• now uses spin and shockwave and abilities, which have more balanced stats

chieftain:

• longer totem and heavy attack timers
• reduced damage and slightly longer attack timings
• separate 'body' to give higher hp and non-fleeing behaviour
• fixed particle field for red totem (thanks to suggestion from crab) and allowed it to be summoned
• loot table now uses 'All' and 'Lottery'
• totems have lower range, less hp, faster ticks (with smaller effect)
• randomised cooldown for heavy attacks

harvester:

• mixes up close range attacks with fire breath and pumpkins (the latter creates some gaps in summoned vines)
• randomised cooldowns for mixup attacks
• 2 vine summon stages (second is more dense)
• reduced durations of fire breath, with added cooldown timer
• loot table now uses 'All' and 'Lottery'
• modified damage output and health
• slight change in sprite hitbox height for ensnaring vines to try and fix movement blocking

checklist:

• By opening this merge request, you agree to release your code and all other changes under the GPL 3 license and to abide by the terms set by this license.
• [-] Migrations have been added if applicable (migrations are always necessary for removing/renaming item asset files)
• Significant changes of this merge request have been added to the changelog.