Update and rename external-dependency-manager-issue.md to issue.md

Author: chkuang-g

.github/ISSUE_TEMPLATE/external-dependency-manager-issue.md

@@ -0,0 +1,35 @@
+---
+name: 🐞 Bug report
+about: Please use this template to report issues with the External Dependency Manager for Unity (EDM4U)
+labels: new
+---
+
+<!-- DO NOT DELETE
+validate_template=true
+template_path=.github/ISSUE_TEMPLATE/issue.md
+-->
+
+### [READ] For Firebase Unity SDK issues, 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 (from .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 issue here:
+(Please list the full steps to reproduce the issue. Include device logs, Unity logs, and stack traces if available.)
+
+#### Please answer the following, if applicable:
+What's the issue repro rate? (eg 100%, 1/5 etc)
+
+What happened? How can we make the problem occur?
+This could be a description, log/console output, etc.
+
+If you have a downloadable sample project that reproduces the bug you're reporting, you will
+likely receive a faster response on your issue.