cryptarch/dice: Interpreter and shell for standard dice notation

Timothy Rice 83cfb7a8d8 Undo regression which borked the parser		5 年之前
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dice-test.sh	83cfb7a8d8 Undo regression which borked the parser	5 年之前
testing.dice	83cfb7a8d8 Undo regression which borked the parser	5 年之前
valgrind.sh	83cfb7a8d8 Undo regression which borked the parser	5 年之前