Engineering guidebook megaupdate v2 (#33062)

Significantly updates the Engineering guidebook (more explicitly the Atmos section) to have a lot more relevant and useful information.

Right now engineering has been getting update after update with no real change to the relevant guidebook entry. This has lead to a lot of out of date information and bad practices being prevalent in the guidebook, something that pains me to read.

Content.Server/Power/Components/PowerNetworkBatteryComponent.cs

@@ -1,4 +1,5 @@
 using Content.Server.Power.Pow3r;
+using Content.Shared.Guidebook;
 
 namespace Content.Server.Power.Components
 {
@@ -24,6 +25,7 @@ namespace Content.Server.Power.Components
 
         [DataField("maxSupply")]
         [ViewVariables(VVAccess.ReadWrite)]
+        [GuidebookData]
         public float MaxSupply
         {
             get => NetworkBattery.MaxSupply;