[MIRROR] Adds repair examine hints to the Gravgen [MDB IGNORE] (#22494)

* Adds repair examine hints to the Gravgen (#76824)

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## About The Pull Request
Somebody told me recently "Hey, I beat the gravgen up and nothing would
fix it!"
Turns out there's actually really simple steps! Just absolutely no
in-game place to find them.

So, about 2 weeks after I said I would, I made less than 15 lines of
code.

Fixing any other horrifying things about the gravgen are out of my
control. I'm just capable of the examine lol
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## Why It's Good For The Game
Knowing you can fix stuff is the first step to fixing it!

![image](https://github.com/tgstation/tgstation/assets/76465278/1608e98a-2ad8-4ad9-a9e4-8fb3867fbff1)

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## Changelog

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🆑
qol: in the event the Gravity Generator becomes damaged, examining the
main part will now give repair hints!
/🆑

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---------

Co-authored-by: Jacquerel <hnevard@ gmail.com>

* Adds repair examine hints to the Gravgen

---------

Co-authored-by: OrionTheFox <76465278+OrionTheFox@users.noreply.github.com>
Co-authored-by: Jacquerel <hnevard@ gmail.com>

code/modules/power/gravitygenerator.dm

@@ -215,6 +215,20 @@ GLOBAL_LIST_EMPTY(gravity_generators)
 
 // Interaction
 
+/obj/machinery/gravity_generator/main/examine(mob/user)
+	. = ..()
+	if(!(machine_stat & BROKEN))
+		return
+	switch(broken_state)
+		if(GRAV_NEEDS_SCREWDRIVER)
+			. += span_notice("The entire frame is barely holding together, the <b>screws</b> need to be refastened.")
+		if(GRAV_NEEDS_WELDING)
+			. += span_notice("There's lots of broken seals on the framework, it could use some <b>welding</b>.")
+		if(GRAV_NEEDS_PLASTEEL)
+			. += span_notice("Some of this damaged plating needs full replacement. <b>10 plasteel</> should be enough.")
+		if(GRAV_NEEDS_WRENCH)
+			. += span_notice("The new plating just needs to be <b>bolted</b> into place now.")
+
 // Fixing the gravity generator.
 /obj/machinery/gravity_generator/main/attackby(obj/item/weapon, mob/user, params)
 	if(machine_stat & BROKEN)