Automate and improve rgblink test

Check all sections when testing BANK().

Add scripts to verify the tests and update the reference if needed.

Signed-off-by: AntonioND <antonio_nd@outlook.com>

test/link/test.sh

@@ -0,0 +1,12 @@
+otemp=$(mktemp)
+gbtemp=$(mktemp)
+outtemp=$(mktemp)
+
+RGBASM=../../rgbasm
+RGBLINK=../../rgblink
+
+$RGBASM -o $otemp bank-numbers.asm
+$RGBLINK -o $gbtemp $otemp > $outtemp 2>&1
+diff bank-numbers.out $outtemp
+head -c 20 $gbtemp > $otemp 2>&1
+diff bank-numbers.out.bin $otemp