* move export rules to definitions package
* move provisioning contact point methods to provisioning package
* move AlertRuleGroupWithFolderTitle to ngalert models and adapter functions to api's compat
* move rule_types files back to where they were before.
* copy AlertQuery from ngmodels to the definition package
* replaces usages of ngmodels.AlertQuery in API models
* create a converter between models of AlertQuery
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Co-authored-by: Alex Moreno <alexander.moreno@grafana.com>