Feature: Pair Categories (#35)

* Feature/pair categories re (#1)

Implemented pair categories:
- Paired users can now get tags
- Tags get rendered into the main UI as groups
- Tags are persistently stored on the local configuration

* Added multi-server capabilities and cleaned up code

- Tags and available tags are stored per API url
- Added a few tooltips

* Renamed both dictionary to reflect the fact that they are per-server dictionaries

* Swapped icons and no longer renders groups that are empty after filter

MareSynchronos/UI/UIShared.cs

@@ -264,6 +264,13 @@ public class UiShared : IDisposable
         ImGui.TextUnformatted(text);
         ImGui.PopTextWrapPos();
     }
+    
+    public static void FontText(string text, ImFontPtr font)
+    {
+        ImGui.PushFont(font);
+        ImGui.TextUnformatted(text);
+        ImGui.PopFont();
+    }
 
     public static Vector4 GetCpuLoadColor(double input) => input < 50 ? ImGuiColors.ParsedGreen :
         input < 90 ? ImGuiColors.DalamudYellow : ImGuiColors.DalamudRed;