Change pride tiles to generic holiday tiles, add Tramstation support (#75665)

## About The Pull Request

- Rewrites the Pride Week rainbow tiles coloring into a more generic
'Holiday' tile coloring proc so that it can be used by any holiday
- Adds support for different color patterns
- Adds support for the trimline decal subtype Tramstation uses
- Adds stack types for tram tiles so that if you pull them up you can
put them back
- Fixes naming of tile decals

## Why It's Good For The Game

- The generic proc allows us to specify a different color set for each
holiday (think red white blue for July 4, or red/white/green for
Christmas)
- Players now have a way to put back tram platform tiles that have been
pulled up
- Tramstation gets colored tiles like the other maps


![image](https://github.com/tgstation/tgstation/assets/83487515/0b6ebf5e-43f1-4453-b680-6a4573392b10)

## Changelog

🆑 LT3
fix: Tram platform tiles now have proper stack types
refactor: Pride week tile coloring refactored into a generic holiday
decal system
spellcheck: Tile decals are no longer all named 'corner'
/🆑

code/modules/holiday/holidays.dm

@@ -25,6 +25,8 @@
 	var/poster_name = "generic celebration poster"
 	var/poster_desc = "A poster for celebrating some holiday. Unfortunately, its unfinished, so you can't see what the holiday is."
 	var/poster_icon = "holiday_unfinished"
+	/// Color scheme for this holiday
+	var/list/holiday_colors
 
 // This proc gets run before the game starts when the holiday is activated. Do festive shit here.
 /datum/holiday/proc/celebrate()
@@ -75,6 +77,29 @@
 
 	return FALSE
 
+/// Procs to return holiday themed colors for recoloring atoms
+/datum/holiday/proc/get_holiday_colors(atom/thing_to_color, pattern = PATTERN_DEFAULT)
+	if(!holiday_colors)
+		return
+	switch(pattern)
+		if(PATTERN_DEFAULT)
+			return holiday_colors[(thing_to_color.y % holiday_colors.len) + 1]
+		if(PATTERN_VERTICAL_STRIPE)
+			return holiday_colors[(thing_to_color.x % holiday_colors.len) + 1]
+
+/proc/request_holiday_colors(atom/thing_to_color, pattern = PATTERN_DEFAULT)
+	switch(pattern)
+		if(PATTERN_RANDOM)
+			return "#[random_short_color()]"
+		if(PATTERN_RAINBOW)
+			var/datum/holiday/pride_week/rainbow_datum = new()
+			return rainbow_datum.get_holiday_colors(thing_to_color, PATTERN_DEFAULT)
+	if(!length(GLOB.holidays))
+		return
+	for(var/holiday_key in GLOB.holidays)
+		var/datum/holiday/holiday_real = GLOB.holidays[holiday_key]
+		return holiday_real.get_holiday_colors(thing_to_color, pattern)
+
 // The actual holidays
 
 // JANUARY
@@ -220,6 +245,9 @@
 		if(P.client)
 			P.client.playtitlemusic()
 
+/datum/holiday/april_fools/get_holiday_colors(atom/thing_to_color)
+	return "#[random_short_color()]"
+
 /datum/holiday/spess
 	name = "Cosmonautics Day"
 	begin_day = 12
@@ -327,27 +355,22 @@
 	name = "Summer Solstice"
 	begin_day = 21
 	begin_month = JUNE
+
 /datum/holiday/pride_week
 	name = PRIDE_WEEK
 	begin_month = JUNE
 	// Stonewall was June 28th, this captures its week.
 	begin_day = 23
 	end_day = 29
-
-	var/static/list/rainbow_colors = list(
-		COLOR_PRIDE_PURPLE,
-		COLOR_PRIDE_BLUE,
-		COLOR_PRIDE_GREEN,
-		COLOR_PRIDE_YELLOW,
-		COLOR_PRIDE_ORANGE,
-		COLOR_PRIDE_RED,
+	holiday_colors = list(
+	COLOR_PRIDE_PURPLE,
+	COLOR_PRIDE_BLUE,
+	COLOR_PRIDE_GREEN,
+	COLOR_PRIDE_YELLOW,
+	COLOR_PRIDE_ORANGE,
+	COLOR_PRIDE_RED,
 	)
 
-/// Given an atom, will return what color it should be to match the pride flag.
-/datum/holiday/pride_week/proc/get_floor_tile_color(atom/atom)
-	var/turf/turf = get_turf(atom)
-	return rainbow_colors[(turf.y % rainbow_colors.len) + 1]
-
 // JULY
 
 /datum/holiday/doctor
@@ -740,7 +763,6 @@
 /datum/holiday/hebrew/passover/getStationPrefix()
 	return pick("Matzah", "Moses", "Red Sea")
 
-
 // HOLIDAY ADDONS
 
 /datum/holiday/xmas/celebrate()