improvement: support casting atomic in money type #86

Job	Run time
ash-ci / mix deps.get	23s
ash-ci / audit	2m 48s
ash-ci / MIX_ENV=dev mix.compile	2m 39s
ash-ci / MIX_ENV=test mix.compile	2m 40s
ash-ci / mix credo --strict	3s
ash-ci / mix dialyzer	4m 20s
ash-ci / mix sobelow	1m 15s
ash-ci / mix format --check-formatted	1m 11s
ash-ci / mix spark.formatter --check	6s
ash-ci / mix spark.cheat_sheets --check	1m 30s
ash-ci / mix test	1m 42s
ash-ci / mix deps.unlock --check-unused	1m 17s
ash-ci / mix docs	1m 26s
ash-ci / Deploy docs to GitHub pages.	4s
ash-ci / Release	0s
	21m 24s

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