use new multiple issue templates (#2600)

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,3 +1,9 @@
+---
+name: Bug report
+about: Report incorrect or unexpected behavior of discord.js
+
+---
+
 <!--
 If you need help with discord.js installation or usage, please go to the discord.js Discord server instead:
   https://discord.gg/bRCvFy9

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,23 @@
+---
+name: Feature request
+about: Request a new feature that discord.js is missing
+
+---
+
+<!--
+If you need help with discord.js installation or usage, please go to the discord.js Discord server instead:
+  https://discord.gg/bRCvFy9
+This issue tracker is only for bug reports and enhancement suggestions. You won't receive any basic help here.
+-->
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.