Alerts System and UI (#2529)

* #272 add bordered panel for effects bar

* #272 avoid mouse overlapping tooltip when near edges,
change tooltip colors to match mockups

* #272 WIP defining status effect states as YML and
sending them as encoded integers

* #272 refactor to use new alert system

* #272 refactor to use new alert system

* #272 fix various bugs with new alert system and update
alerts to have color

* #272 WIP

* #272 rename status effects to alerts

* #272 WIP reworking alert internals to avoid code dup
and eliminate enum

* #272 refactor alerts to use
categories and fix various bugs

* #272 more alert bugfixes

* #272 alert ordering

* #272 callback-based approach for alert clicks

* #272 add debug commands for alerts

* #272 utilize new GridContainer capabilities for sizing of alerts tab

* #272 scale alerts height based on
window size

* #272 fix tooltip flicker

* #272 transparent alert panel

* #272 adjust styles to match injazz mockups more, add cooldown info in tooltip

* #272 adjust styles to match injazz mockups more, add cooldown info in tooltip

* #272 alert prototype tests

* #272 alert manager tests

* #272 alert order tests

* #272 simple unit test for alerts component

* #272 integration test for alerts

* #272 rework alerts to use enums instead
of id / category

* #272 various cleanups for PR

* #272 use byte for more compact alert messages

* #272 rename StatusEffects folder to Alerts,
add missing NetSerializable

Content.Client/GameObjects/EntitySystems/AI/ClientAiDebugSystem.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using Content.Client.UserInterface.Stylesheets;
 using Content.Shared.AI;
 using Robust.Client.Interfaces.Graphics.ClientEye;
 using Robust.Client.Interfaces.UserInterface;
@@ -178,7 +179,7 @@ namespace Content.Client.GameObjects.EntitySystems.AI
 
                 var panel = new PanelContainer
                 {
-                    StyleClasses = {"tooltipBox"},
+                    StyleClasses = { StyleNano.StyleClassTooltipPanel },
                     Children = {vBox},
                     MouseFilter = Control.MouseFilterMode.Ignore,
                     ModulateSelfOverride = Color.White.WithAlpha(0.75f),