Brighter rail lights (#3722)

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## About The Pull Request

Brightens rail lights to be on-par with seclights

## Why It's Good For The Game

Currently as it is, rail lights are about as good as flashlights, and as
a result aren't an attachment most, if any keep for long once they get
other attachments, or in this case a better flashlight. This'll bring
them on-par with seclights, making them a viable choice as an attachment
for longer.

## Changelog

:cl:
balance: Rail lights have been brightened
/:cl:

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code/game/objects/items/attachments/rail_light.dm

@@ -4,8 +4,8 @@
 	icon_state = "raillight"
 	light_color = COLOR_LIGHT_ORANGE
 	light_system = MOVABLE_LIGHT_DIRECTIONAL
-	light_range = 4
-	light_power = 0.8
+	light_range = 5
+	light_power = 0.9
 	light_on = FALSE
 
 	attach_features_flags = ATTACH_REMOVABLE_HAND|ATTACH_TOGGLE