Add seperate issue for questions

A big portion of issues are of "Type: Question".

This PR adds a separate issue template for those.
It also automatically adds the "Type: Question" tag.

in addition it adds "Type: Defect" to all bug reports by default

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Kjeld Schouten-Lebbing <kjeld@schouten-lebbing.nl>
Closes #10779