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

.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,7 +2,7 @@
 name: Bug report
 about: Create a report to help us improve OpenZFS
 title: ''
-labels: ''
+labels: 'Type: Defect'
 assignees: ''
 
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