Centralize location of memory pools

This commit centralizes the location of memory pools and adds an
associated script (scripts/get_memory_map.sh) to read the memory map.

scripts/get_memory_map.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# Run this from the root directory of the project, not the scripts directory
+POOL_DEF_FILE='./include/pools.def'
+ELF_FILE='./build/balatro-gba.elf'
+READELF='/opt/devkitpro/devkitARM/bin/arm-none-eabi-readelf'
+
+get_pool_names() {
+    grep POOL_ENTRY "$POOL_DEF_FILE" | sed -n 's@.*(\(.*\)).*@\1@p' | sed 's@,@@g' | cut -d ' ' -f 1
+}
+
+TOTAL_BYTES=0
+
+echo "--------------------------------------------"
+printf "%-16s| %-10s | %s\n" "Object" "location" "size"
+echo "--------------------------------------------"
+
+for name in $(get_pool_names); do
+    output="$( \
+            "$READELF" -sW "$ELF_FILE" | \
+            grep "${name}_" | \
+            grep OBJECT | \
+            grep storage | sed -E 's@ +@ @g; s@^ @@' \
+        )"
+
+    location="$(cut -d ' ' -f 2 <<< $output)"
+    size="$(cut -d ' ' -f 3 <<< $output)"
+    TOTAL_BYTES=$(( TOTAL_BYTES + size ))
+
+    printf "%-16s| 0x%s | %-8u\n" "$name" "$location" "$size"
+done
+
+echo "--------------------------------------------"
+echo Total bytes used: $TOTAL_BYTES