Add extra stamps options (#60)

* add classicshifted stamps
* improve custom stamp handling and add realm acorn examples
* add split_custom_directory function so we don't have to keep copy pasting filename injection scripts
* improve to_number_lax

---------

Co-authored-by: cajun <12363371+CajunAvenger@users.noreply.github.com>

data/magic.mse-game/stamps/menu_choice_images

@@ -1,16 +1,29 @@
 choice images:
-	none:						/magic.mse-game/stamps/none.png
-	standard:					/magic.mse-game/stamps/oval.png
-	acorn:						/magic.mse-game/stamps/acorn.png
-	heart:						/magic.mse-game/stamps/heart.png
-	universes beyond:			/magic.mse-game/stamps/ub.png
-	alchemy:					/magic.mse-game/stamps/alchemy.png
-	alchemy old:				/magic.mse-game/stamps/alchemy_old.png
-	custom:						{ custom_stamp(flat:false) }
-	flatstamped standard:			/magic.mse-game/stamps/flat_oval.png
-	flatstamped acorn:				/magic.mse-game/stamps/flat_acorn.png
-	flatstamped heart:				/magic.mse-game/stamps/flat_heart.png
-	flatstamped universes beyond:	/magic.mse-game/stamps/flat_ub.png
-	flatstamped alchemy:			/magic.mse-game/stamps/flat_alchemy.png
-	flatstamped alchemy old:		/magic.mse-game/stamps/flat_alchemy_old.png
-	flatstamped custom:				{ custom_stamp(flat:true) }
+	none:										/magic.mse-game/stamps/none.png
+	standard:									/magic.mse-game/stamps/oval.png
+	acorn:										/magic.mse-game/stamps/acorn.png
+	heart:										/magic.mse-game/stamps/heart.png
+	universes beyond:							/magic.mse-game/stamps/ub.png
+	alchemy:									/magic.mse-game/stamps/alchemy.png
+	alchemy old:								/magic.mse-game/stamps/alchemy_old.png
+	iderp classicshifted:						/magic.mse-game/stamps/iderp_classicshifted_default.png
+	iderp classicshifted default:				/magic.mse-game/stamps/iderp_classicshifted_default.png
+	iderp classicshifted blue:					/magic.mse-game/stamps/iderp_classicshifted_blue.png
+	iderp classicshifted gold:					/magic.mse-game/stamps/iderp_classicshifted_gold.png
+	iderp classicshifted green:					/magic.mse-game/stamps/iderp_classicshifted_green.png
+	iderp classicshifted iblue:					/magic.mse-game/stamps/iderp_classicshifted_iblue.png
+	iderp classicshifted igreen:				/magic.mse-game/stamps/iderp_classicshifted_igreen.png
+	iderp classicshifted ired:					/magic.mse-game/stamps/iderp_classicshifted_ired.png
+	iderp classicshifted iwhite:				/magic.mse-game/stamps/iderp_classicshifted_iwhite.png
+	iderp classicshifted purple:				/magic.mse-game/stamps/iderp_classicshifted_purple.png
+	iderp classicshifted red:					/magic.mse-game/stamps/iderp_classicshifted_red.png
+	iderp classicshifted teal:					/magic.mse-game/stamps/iderp_classicshifted_teal.png
+	custom:										{ custom_stamp(dimensions:"375x523", flat:false) }
+	flatstamped standard:						/magic.mse-game/stamps/flat_oval.png
+	flatstamped acorn:							/magic.mse-game/stamps/flat_acorn.png
+	flatstamped heart:							/magic.mse-game/stamps/flat_heart.png
+	flatstamped universes beyond:				/magic.mse-game/stamps/flat_ub.png
+	flatstamped alchemy:						/magic.mse-game/stamps/flat_alchemy.png
+	flatstamped alchemy old:					/magic.mse-game/stamps/flat_alchemy_old.png
+	flatstamped custom:							{ custom_stamp(dimensions:"375x523", flat:true) }
+	flatstamped iderp classicshifted:			/magic.mse-game/stamps/flat_iderp_classicshifted.png