Add skill-group prototypes, delete flows, and per-group skill creation UX

RpgRoller/Migrations/RpgRollerDbContextModelSnapshot.cs

@@ -164,14 +164,25 @@ namespace RpgRoller.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("TEXT");
 
+                    b.Property<bool>("AllowFumble")
+                        .HasColumnType("INTEGER");
+
                     b.Property<Guid>("CharacterId")
                         .HasColumnType("TEXT");
 
+                    b.Property<string>("DiceRollDefinition")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("TEXT");
+
                     b.Property<string>("Name")
                         .IsRequired()
                         .HasMaxLength(128)
                         .HasColumnType("TEXT");
 
+                    b.Property<int>("WildDice")
+                        .HasColumnType("INTEGER");
+
                     b.HasKey("Id");
 
                     b.HasIndex("CharacterId");