Create question.md

Add general question template

Author: chkuang-g

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,26 @@
+---
+name: ❓ General question
+about: Please use this template to ask general question with the External Dependency Manager for Unity (EDM4U)
+labels: type: question
+---
+
+<!-- DO NOT DELETE
+validate_template=true
+template_path=.github/ISSUE_TEMPLATE/question.md
+-->
+
+### [READ] For Firebase Unity SDK question, please report to [Firebase Unity Sample](https://github.com/firebase/quickstart-unity/issues/new/choose)
+
+Once you've read this section and determined that your issue is appropriate for this repository, please delete this section.
+
+### [REQUIRED] Please fill in the following fields:
+
+  * Unity editor version: _____
+  * External Dependency Manager version: _____
+  * Source you installed EDM4U: _____ (.unitypackage or Unity Package Manager)
+  * Features in External Dependency Manager in use: _____ (Android Resolver, iOS Resolver, VersionHandler, etc.)
+  * Plugins SDK in use: _____ (Firebase, Admob, Facebook, etc.)
+  * Platform you are using the Unity editor on: _____ (Mac, Windows, or Linux)
+
+### [REQUIRED] Please describe the question here:
+