Expose `sql` and `params` arguments to various plugin hooks

On Discord: https://discord.com/channels/823971286308356157/996877076982415491/1022784534363787305

Hi! I'm attempting to write a plugin that would provide some statistics on text fields (most common words, etc). I would want this information displayed in the table pages, and (ideally) also updated when users make custom queries from the table pages.

It seems one way to do this would be to use the extra_template_vars hook, and make the appropriate SQL query there. So extra_template_vars would create a variable that is a list of most common words, and this is displayed on the page, possibly above the regular table view.

Is there a way that the plugin code can access the SQL query (or even the data) that was used to produce the table view? I can see that TableView class constructs the SQL query, but I can't seem to find a way to access that information from the objects that are available to extra_template_vars.

Start with the TableView class and the extra_template_vars hook described in the issue, then trace how the table SQL is constructed and how plugin hook arguments are passed. Determine which hooks should receive sql and params, and add coverage showing those values are available to plugin code.