Gravity generator rewrite (#4828)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Resources/Locale/en-US/gravity/gravity-generator-component.ftl

@@ -1,8 +1,28 @@
+### Gravity Generator
+
 ## UI
 
-gravity-generator-window-title = Gravity Generator Control
-gravity-generator-window-status-label = Current Status: {$status}
-gravity-generator-window-turn-off-button = Turn off
-gravity-generator-window-turn-on-button = Turn on
-gravity-generator-window-is-on = [color=green]On[/color]
-gravity-generator-window-is-off = [color=red]Off[/color]
+gravity-generator-window-title = Gravity Generator
+
+## UI field names
+
+gravity-generator-window-status = Status:
+gravity-generator-window-power = Power:
+gravity-generator-window-eta = ETA:
+gravity-generator-window-charge = Charge:
+
+## UI statuses
+gravity-generator-window-status-fully-charged = Fully Charged
+gravity-generator-window-status-off = Off
+gravity-generator-window-status-charging = Charging
+gravity-generator-window-status-discharging = Discharging
+
+## UI Power Buttons
+gravity-generator-window-power-on = On
+gravity-generator-window-power-off = Off
+gravity-generator-window-power-label = { $draw } / { $max } W
+
+## UI ETA label
+
+gravity-generator-window-eta-none = N/A
+gravity-generator-window-eta-value = { TOSTRING($left, "m\\:ss") }