eww: Add ram gauge

tree/.config/eww/eww.yuck

@@ -40,6 +40,7 @@
 		(speaker)
 		(temperature)
 		(battery)
+		(ram)
 		(box :class "thingy" (systray :orientation "v"))
 		(color_scheme)
 		(xwayland)
@@ -138,6 +139,21 @@
 		(label :text "${current_temp / 1000}°")
 ))
 
+(defwidget ram []
+	(box :orientation "v"
+	     :valign "end"
+	     :class "thingy"
+		(label :text "RAM")
+		(circular-progress
+			:thickness 4.0
+			:value {EWW_RAM.used_mem_perc}
+			:class {
+				EWW_RAM?.used_mem_perc > 80  ? "battery-gauge low" :
+				                               "battery-gauge"
+			}
+		)
+))
+
 (defwidget battery []
 	(box :orientation "v"
 	     :valign "end"