chore(ISSUE_TEMPLATE/BUG): move bug reports into their own template

Author: michael-ciniawsky

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,34 @@
+---
+name: 🐛  Bug
+about: Report a Bug
+---
+
+<!-- ✏️ Briefly describe the issue you are experiencing. Tell us what you were trying to do and what happened instead. Remember, this is *not* the right place to ask general support questions. For that, please go to http://gitter.im/postcss/postcss -->
+
+### Details
+
+<!-- ✏️ Describe in more detail the problem you have been experiencing (if necessary) -->
+
+### Error (Logs|Stacks)
+
+<!-- 👉 Create a [gist](https://gist.github.com) which is a paste of your **full** logs, and link them here -->
+
+<!-- ⚠️ Do **not** paste your full logs here (or at least fold them by using a `<details>{{ logs }}</details>` block), as it will make this issue long and hard to read! If you are reporting a bug, **always** include logs! -->
+
+### Reproduction (Code)
+
+<!-- ⚠️ Please remember that, with sample code; it's easier to reproduce a bug and much faster to fix it -->
+
+<!-- 🔗 Please refer to a simple code example -->
+
+```bash
+$ git clone https://github.com/<user>/<sample>
+```
+
+### Environment
+
+<!-- 👉 Please provide information about your current environment -->
+
+|OS|node|npm/yarn|package|
+|:-:|:--:|:-:|:------:|
+|[name][version]|[version]|[version]|[version]|