Add build script to generate the .gba files

.github/scripts/build-example-gba-files.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+set -e # Fail if any command fails
+set -x # print every command before it runs
+
+# Requires gbafix and arm-none-eabi-objcopy to already be installed
+
+function build_rom() {
+    local GAME_NAME="$1"
+    local INTERNAL_NAME="$2"
+
+    local GBA_FILE="target/$GAME_NAME.gba"
+
+    pushd "examples/$GAME_NAME"
+    cargo build --release
+
+    arm-none-eabi-objcopy -O binary "target/thumbv4t-none-eabi/release/$GAME_NAME" "$GBA_FILE"
+    gbafix -p "-t${INTERNAL_NAME:0:12}" "-c${INTERNAL_NAME:0:4}" -mGC "$GBA_FILE"
+
+    cp -v "$GBA_FILE" "../$GAME_NAME.gba"
+
+    popd
+}
+
+build_rom "the-purple-night" "PURPLENIGHT"
+build_rom "the-hat-chooses-the-wizard" "HATWIZARD"

examples/.gitignore

@@ -0,0 +1 @@
+*.gba