improvement: add error handling tooling for custom queries #1195

Job	Run time
ash-ci / mix deps.get	29s
ash-ci / audit	41s
ash-ci / MIX_ENV=test mix.compile	44s
ash-ci / MIX_ENV=dev mix.compile	28s
ash-ci / mix docs	27s
ash-ci / mix format --check-formatted	39s
ash-ci / mix credo --strict	38s
ash-ci / mix dialyzer	4m 2s
ash-ci / mix ash.codegen --check	0s
ash-ci / mix sobelow	41s
ash-ci / mix spark.cheat_sheets --check	36s
ash-ci / mix spark.formatter --check	36s
ash-ci / mix test	1m 14s
ash-ci / mix deps.unlock --check-unused	36s
ash-ci / Deploy docs to GitHub pages.	9s
ash-ci / Release	0s
	12m 0s

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