Feature request: more information in outline view

[ljw1004]

There doesn't yet seem to be an issue to track the question of extra information for nodes in outline view. Here's the list suggested by @MartinHaeusler - #5605 (comment)

1. Public/private/protected. I'd hope these could be icon badges super-imposed on the existing icons.
2. Type signature of functions+methods+fields, in a separate typeface
3. Final/static/abstract/readonly indication. Again hopefully via a small badge on the icon.

[jrieken]

This is mostly duplicating #23927 which is about kind modifiers. Regarding more detail: we have a property for that in the proposed API but no one provides information yet

[jrieken]

We now have #23927 which did set the path for supporting public, private and static, abstract etc, etc. The signature of properties can be shown via the details-field.

Closing as most work left is in adding more SymbolTags and on extensions to populate the fields accordingly.