refactors poles and trees into basic mobs (#74812)

## About The Pull Request
refactors poles and trees into basic mobs. If trees now see you holding
a chainsaw, hatchet, or some wood they will get angry and knock you out
for longer. Poles will run around giving some of their charge to APCs
they find along the way. i did them both in this PR coz poles were a
subtype of trees.

## Why It's Good For The Game
refactor

## Changelog
🆑
refactor: refactors trees into basic mobs
refactor: refactors poles into basic mobs
add: If trees now see you holding a chainsaw, hatchet, or some wood they
will get angry and knock you out for longer
add: Poles will run around giving some of their charge to APCs they find
along the way
fix: cells charged by the pole will now have their icon correctly
updated to reflect their charge
/🆑

---------

Co-authored-by: Mothblocks <35135081+Mothblocks@users.noreply.github.com>

code/datums/ai/basic_mobs/basic_subtrees/speech_subtree.dm

@@ -116,3 +116,7 @@
 	speak = list("Gnot a gnelf!", "Gnot a gnoblin!", "Howdy chum!")
 	emote_hear = list("snores.", "burps.")
 	emote_see = list("blinks.")
+
+/datum/ai_planning_subtree/random_speech/tree
+	speech_chance = 3
+	emote_see = list("photosynthesizes angirly.")