improvement: Add a top-level NOT filter, along with AND and OR filter… #764

Job	Run time
ash-ci / mix deps.get	30s
ash-ci / MIX_ENV=test mix.compile	46s
ash-ci / MIX_ENV=dev mix.compile	43s
ash-ci / mix hex.audit	36s
ash-ci / mix sobelow	59s
ash-ci / mix spark.cheat_sheets --check	59s
ash-ci / mix credo --strict	53s
ash-ci / mix dialyzer	5m 25s
ash-ci / mix format --check-formatted	41s
ash-ci / mix spark.formatter --check	42s
ash-ci / mix test	1m 21s
ash-ci / mix deps.unlock --check-unused	56s
ash-ci / Release	0s
	14m 31s

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