OOC sent by an admin will have a different color (#3117)

* Admin OOC is sent with a different color than regular OOC

- Also adds the OOC color to the database

* Command to set the color

* Ooc -> OOC

* Change default color to Red (`#ff0000`)

* Outdated namespace

Content.Server.Database/Migrations/Sqlite/SqliteServerDbContextModelSnapshot.cs

@@ -196,6 +196,11 @@ namespace Content.Server.Database.Migrations.Sqlite
                         .HasColumnType("INTEGER")
                         .HasColumnName("preference_id");
 
+                    b.Property<string>("AdminOOCColor")
+                        .IsRequired()
+                        .HasColumnType("TEXT")
+                        .HasColumnName("admin_ooc_color");
+
                     b.Property<int>("SelectedCharacterSlot")
                         .HasColumnType("INTEGER")
                         .HasColumnName("selected_character_slot");