Oldchat (#11913)

* attempt at moving MainViewport to UIWidget

* oldchat (prototype)

* separate oldchat and default ss14 HUD into their own files

* restores original default game screen logic and adds that logic into separated chat game screen

* hand reloading, several tweaks to port oldchat to main ss14 branch

oldchat is currently not selectable

* screen type cvar, gameplay state screen reloading/loading

* reload screen on ui layout cvar change

* fixes up basic reloading (HUD switching is still very bad)

* some UI widget reloading for main UI screen switching

* alert sync on screen change

* inventory reload

* hotbar margin fix

* chat bubbles above viewport

* whoops

* fixes ordering of speech bubble root

* should fix the chat focus issue (at least in-game, not lobby yet)

* should fix up the lobby/game chat focus

* fixes chat for lobby, turns lobby into a UI state

* viewport UI controller

* viewport ratio selection

* whoops

* adds the /tg/ widescreen ratio

* removes warning from inventory UI controller, adds background to separated chat game screen's chat portion

* menu button reload

* unload menu buttons only from gameplay state shutdown

* bugfix

* character button fix

* adds config options for viewport width/UI layout

* variable naming changes, get or null instead of get to avoid exceptions

* moves entity system get into controller

Content.Client/Options/UI/Tabs/GraphicsTab.xaml

@@ -32,6 +32,18 @@
                             MinWidth="200" />
                 </BoxContainer>
             </BoxContainer>
+            <BoxContainer Orientation="Horizontal">
+                <Label Name="ViewportWidthSliderDisplay" />
+                <Control MinSize="4 0" />
+                <Slider Name="ViewportWidthSlider"
+                        Rounded="True"
+                        MinWidth="200" />
+            </BoxContainer>
+            <BoxContainer Orientation="Horizontal">
+                <Label Text="{Loc 'ui-options-hud-layout'}" />
+                <Control MinSize="4 0" />
+                <OptionButton Name="HudLayoutOption" />
+            </BoxContainer>
             <CheckBox Name="IntegerScalingCheckBox"
                       Text="{Loc 'ui-options-vp-integer-scaling'}"
                       ToolTip="{Loc 'ui-options-vp-integer-scaling-tooltip'}" />