Added NPC/Nextbot/Player check to EntityTakeDamage trigger_hurt override to trigger_hurt_morekillicons

+ Hotfix for a nil call, thanks Kurome for the report

+ Added kill icon for weapon_fists

- Removed water icon as drowning is overriden by worldspawn killicon and waterydeath is fish icon (leech)

+ Added wrecking ball kill icon for func_pendulum
+ Linked already existing kill icons to HL1 NPCs and weapons
+ trigger_hurt's icon finally works with some server lua magic (can be disabled with morekillicons_trigger_hurt_override 0)
+ Added the suicide kill icon (displayed as escape door)

Fun fact: I used these Stickmen before in the intro sequence of King's Turn To Die[itch.io]