Handle booleans in filter editor

[lukasolson]

Fixes #12745.

This PR updates the filter editor to properly handle fields of type boolean. It also removes the "is one of" and "is not one of" options from the boolean field type (because they don't make much sense).

[cjcenizal]

FWIW, I think the UI will be a little easier to parse if you use a select with "true" and "false" options instead of a checkbox here. It's kind of an unusual checkbox behavior to check it and cause the label to change.

[lukasolson]

@cjcenizal I agree. I've updated it to use a select instead.

[Bargs]

LGTM

While I was testing this I also noticed boolean scripted fields are incorrectly showing an empty string in the filter pill. Thought I'd mention it in case you were feeling in the mood, otherwise we can create a separate ticket for it :)

[lukasolson]

I also noticed boolean scripted fields are incorrectly showing an empty string in the filter pill.

Are you sure you're not using some sort of formatter that's doing this? When I create a scripted boolean, I don't see this:

[weltenwort]

I was able to reproduce the "empty bool value" effect that @Bargs reported by performing these steps in the same tab without reloading:

• create a new index pattern
• go to discover, add one of the fields as a column
• go to index pattern settings, add a scripted bool field
• go back to discover
• add the new scripted field as a column

For me, all the values in that column as well as the filter descriptions were empty. There seems to be something wrong with the boolean field formatters, so it is probably not related to this PR. A page reload fixes it.