fix(nui): remove excess spacing in MainGameScreen HUD

Author: BenjaminAmos

engine/src/main/resources/org/destinationsol/assets/skins/mainGameScreen.skin

@@ -13,7 +13,7 @@
     "statsBars": {
       "elements": {
         "RelativeLayout": {
-          "fixed-height": 32
+          "fixed-height": 36
         },
         "UILabelledIcon": {
           "fixed-height": 32,

engine/src/main/resources/org/destinationsol/assets/ui/mainGameScreen_desktop.ui

@@ -17,7 +17,7 @@
           },
           "width": 288
         },
-        "verticalSpacing": 8,
+        "verticalSpacing": 0,
         "fillVerticalSpace": false,
         "contents": [
         ]

engine/src/main/resources/org/destinationsol/assets/ui/mainGameScreen_mobile.ui

@@ -20,7 +20,7 @@
           }
         },
         "column-widths": [0.6],
-        "verticalSpacing": 8,
+        "verticalSpacing": 0,
         "fillVerticalSpace": false,
         "contents": [
         ]