WIP: github issue template (#7701)

* WIP: github issue template

* Update issue_template.md

.github/issue_template.md

+**Bug Report** or **Feature Request**
+
+For general questions please use [PX4 Discuss](http://discuss.px4.io/) or [Slack](slack.px4.io). Issue reports need to contain the items below:
+
+ - Download the flight log file from the vehicle ([tutorial](https://docs.px4.io/en/flight-reporting.html))
+ - Share the link to a log showing the problem on [PX4 Flight Review](http://logs.px4.io/)
+ - Expected behavior and actual behavior.
+ - Steps to reproduce the problem.
+ - Specifications like the version of the project, operating system, or hardware.