add github issue template

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,20 @@
+<!--
+    This template is for bug reports. If you are reporting a bug, please answer all the questions below.
+    If you are here for another reason (feature request, question, etc) please delete this template before continuing.
+
+    Note that leaving sections blank will make it difficult for us to troubleshoot, causing delays in our response,
+    or result in closing this issue.
+-->
+
+**Tell us about your environment**
+
+* **Browser and Browser Version:**
+* **After Effects Version:**
+
+**What did you do? Please explain the steps you took before you encountered the problem.**
+
+**What did you expect to happen?**
+
+**What actually happened? Please include as much _relevant_ detail as possible.**
+
+**Please provide a download link to the After Effects file that demonstrates the problem.**