Add issue template

ISSUE_TEMPLATE.md

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+If you need support: Please post on https://www.reddit.com/r/crankshaft/ as this is a bug tracker, not a support forum.
+
+Note: Reporting issues not based on official published builds will be closed without any comment.
+
+- What phone do you have?
+
+- What OS version?
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+- What crankshaft version?
+
+- Steps to reproduce the bug, if you're planning to report a bug. Please indicate whether the bug is always repoducible.
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+- Please provide any further information that you might find helpful if available.
+
+- Starting with pre4: Boot into dev mode (can be selected in settings).
+  Reproduce the possible bug. Create the debug logs by pushing the grey button on bottom of screen.
+  Add the created file (/boot/debug.zip) to the issue.
+
+  Warning: if you have configured wifi passwords they will be blanked by script during creation.
+  We can't make absolutly sure you passwords are removed so do a personal check of the files inside the zip.