Create ISSUE_TEMPLATE.md

Taken from https://github.com/uBlockOrigin/uBlock-issues/blob/master/.github/ISSUE_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

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+<!-- Do NOT delete this template or any part of it when submitting your issue -->
+
+### Prerequisites
+
+<!-- Check the appropriate boxes after you submit your issue -->
+<!-- Speculated performance issues will be marked as invalid and closed if they do not come with actual profiling data + analysis supporting the claim -->
+<!-- Opening issues for adding new filter lists is now disallowed and such issues will be declined and closed -->
+
+- [ ] I verified that this is not a filter issue
+    - Filter issues MUST be reported at [filter issue tracker](https://github.com/uBlockOrigin/uAssets/issues)
+    <!--
+        - If disabling uBO <https://github.com/gorhill/uBlock/wiki/Quick-guide:-popup-user-interface#the-large-power-button> makes the issue go away, then in all likelihood this is a filter issue.
+        - See what the logger <https://github.com/gorhill/uBlock/wiki/The-logger> reports when you reproduce the issue, this will help you determine whether this is a filter issue.
+    -->
+- [ ] This is not a support issue or a question
+    - Support issues and questions are handled at [/r/uBlockOrigin](https://old.reddit.com/r/uBlockOrigin/)
+    <!-- Such issue will be closed as invalid -->
+- [ ] I performed a cursory search of the issue tracker to avoid opening a duplicate issue
+    - Your issue may already be reported.
+- I tried to reproduce the issue when...
+    - [ ] uBlock Origin is the only extension
+    - [ ] uBlock Origin with default lists/settings
+    - [ ] using a new, unmodified browser profile
+- [ ] I am running the latest version of uBlock Origin
+- [ ] I checked the [documentation](https://github.com/gorhill/uBlock/wiki) to understand that the issue I report is not a normal behavior
+
+### Description
+
+[Description of the bug or feature]
+
+### A specific URL where the issue occurs
+
+[A specific URL is MANDATORY for issue happening on a web page, even if it happens "everywhere"]
+
+### Steps to Reproduce
+
+1. [First Step]
+2. [Second Step]
+3. [and so on...]
+
+### Expected behavior:
+
+[What you expected to happen]
+
+### Actual behavior:
+
+[What actually happened]
+
+### Your environment
+
+* uBlock Origin version:
+* Browser Name and version:
+* Operating System and version: