New Wizard spell "branch": Vendormancy (#75679)

## About The Pull Request
New item for wizards, ~~the Staff~~ Scepter of Runic Vendormancy.

With it, you can summon Runic Vending machines to block your enemies,
push them 2 tiles back around the summoning tile, throw the vendors 4
tiles away to squash them or simple detonate the vendors for direct
damage against enemies within a 2 tile range.

The scepter has 3 charges that can be recharged after a "long" channel
so while powerful, it is a tactical weapon and wizards can't directly
steamroll the crew with endless vendors. (Unless they buy multiple
scepters, but that is just funny.)

Also, there is a bug with the throw... I copied how baseball bats deal
with knockback, but they consistently don't push the vendors back, just
spin them on the same tile... I appreciate if anyone has any idea on how
to fix or change that to a better system.

## New changes I made
The vendor has a random set of REAL wizard robes and hat, sandals and a
foam vendor scepter as products to sell now.
This gives the crew some real armor, and if it is considered too much, I
can swap it for the fake versions.
IMO the real clothes work as the perfect bait for the crew to approach
the vendors and get exploded in the process, and while a random
assistant might get real wizard armor to go valid hunt the wizard, the
crew might just mistake them for the real wizard and beat them to death,
which is too funny.
## Why It's Good For The Game

![vendormancerPR](https://github.com/tgstation/tgstation/assets/55374212/f9d98f3e-5916-4a17-987e-249f4cdb7185)

About a year ago I played Stoneshard, and it has such an amazing
Geomancy Wizard that I wanted to port some of its gameplay to SS13 as
our wizards, while funny and destructive, are kinda simple to play...

Summoning and blowing up rocks was nice, but I randomly had the idea of
summoning Vendors while at work and vendors squashing people has become
such an iconic SS13 thing to me that I had to stop being lazy and start
working on this.

Something, something, enviromental combat wizard.
## Changelog
Gonna polish the changelog later too...
🆑 Guillaume Prata
add: New Wizard spell branch: Vendormacy! Summon runic vending machines
with your Vending Scepter, force push them on your enemies to squish
them or blow them up while they are busy buying from the machines.
/🆑

---------

Co-authored-by: Time-Green <7501474+Time-Green@users.noreply.github.com>

code/game/objects/items/toys.dm

@@ -1631,3 +1631,20 @@ GLOBAL_LIST_EMPTY(intento_players)
 #undef TIME_TO_BEGIN
 #undef TIME_PER_DEMO_STEP
 #undef TIME_TO_RESET_ICON
+
+/*
+ * Runic Scepter
+ */
+/obj/item/toy/foam_runic_scepter
+	name = "foam scepter"
+	desc = "A foam replica of the scepters Wizards us on Vendormancy Soccer."
+	icon_state = "vendor_staff"
+	inhand_icon_state = "vendor_staff"
+	lefthand_file = 'icons/mob/inhands/weapons/staves_lefthand.dmi'
+	righthand_file = 'icons/mob/inhands/weapons/staves_righthand.dmi'
+	icon = 'icons/obj/weapons/guns/magic.dmi'
+	slot_flags = ITEM_SLOT_BACK
+	attack_verb_continuous = list("smacks", "clubs", "wacks", "vendors")
+	attack_verb_simple = list("smack", "club", "wacks", "vendor")
+	w_class = WEIGHT_CLASS_SMALL
+	resistance_flags = FLAMMABLE