Add RomData, OptionFlags, and enums for them.

Fun error handling with automatic, fallible conversion to and from u8s
for the enums.

enemize/src/bosses/mod.rs

@@ -0,0 +1,48 @@
+use std::marker::PhantomData;
+
+use crate::InvalidEnumError;
+
+#[derive(Debug)]
+#[repr(u8)]
+pub enum BossType {
+    Kholdstare,
+    Moldorm,
+    Mothula,
+    Vitreous,
+    Helmasaur,
+    Armos,
+    Lanmola,
+    Blind,
+    Arrghus,
+    Trinexx,
+    // Don't use these. They are only for manual settings passed in by the randomizer web app.
+    Agahnim,
+    Agahnim2,
+    Ganon,
+    NoBoss = 255,
+}
+
+impl TryFrom<u8> for BossType {
+    type Error = InvalidEnumError<Self>;
+
+    fn try_from(byte: u8) -> Result<Self, Self::Error> {
+        match byte {
+            0 => Ok(Self::Kholdstare),
+            1 => Ok(Self::Moldorm),
+            2 => Ok(Self::Mothula),
+            3 => Ok(Self::Vitreous),
+            4 => Ok(Self::Helmasaur),
+            5 => Ok(Self::Armos),
+            6 => Ok(Self::Lanmola),
+            7 => Ok(Self::Blind),
+            8 => Ok(Self::Arrghus),
+            9 => Ok(Self::Trinexx),
+            10 => Ok(Self::Agahnim),
+            11 => Ok(Self::Agahnim2),
+            12 => Ok(Self::Ganon),
+            255 => Ok(Self::NoBoss),
+            _ => Err(InvalidEnumError(PhantomData))
+        }
+    }
+}
+