query_actions plugin hook - like table_actions and database_actions for the query/canned query page

[simonw]

I just noticed that this page: https://latest.datasette.io/fixtures?sql=select+*+from+facetable

Doesn't fire the database_actions() plugin hook, and so cannot have extra actions added to it.

I think a query_actions() hook would be good here, similar to table_actions() and database_actions(). It could work for both arbitrary SQL queries and canned queries.

This would enable things like https://datasette.io/plugins/datasette-saved-queries to include a menu item for creating and saving a query.

[simonw]

Implemented with tests and documentation in:

• query_actions plugin hook, refs #2283 #2288

[simonw]

Documentation preview: https://datasette--2288.org.readthedocs.build/en/2288/plugin_hooks.html#query-actions-datasette-actor-database-query-name-request-sql-params