Upstream species (#6066)

* Step 1 of porting; grabbed most of the files via patches.

* Add species field to the DB

* Appearance patches for slimes.

* Fix the db test.

* Add slime's biocompat.

* slimby

* Fixes, allow specifying if a species is playable or not.

* Update Content.Client/Preferences/UI/HumanoidProfileEditor.xaml.cs

Co-authored-by: Javier Guardia Fernández <DrSmugleaf@users.noreply.github.com>

* Update Content.Client/Preferences/UI/HumanoidProfileEditor.xaml.cs

Co-authored-by: Javier Guardia Fernández <DrSmugleaf@users.noreply.github.com>

* Update Content.Client/Preferences/UI/HumanoidProfileEditor.xaml.cs

Co-authored-by: Javier Guardia Fernández <DrSmugleaf@users.noreply.github.com>

* Address reviews.

* Address reviews.

* make an if-case.

* Fix a goof where species wouldn't get shown in the editor correctly (it'd always default to human)

Co-authored-by: Javier Guardia Fernández <DrSmugleaf@users.noreply.github.com>

Content.Server.Database/Migrations/Postgres/PostgresServerDbContextModelSnapshot.cs

@@ -611,6 +611,11 @@ namespace Content.Server.Database.Migrations.Postgres
                         .HasColumnType("integer")
                         .HasColumnName("slot");
 
+                    b.Property<string>("Species")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("species");
+
                     b.HasKey("Id")
                         .HasName("PK_profile");