Add support for PR and Issue templates to QMK_firmware GitHub (#4491)

* Add support document

* Add Bug Report

* Add GitHub Pull Request Template

* Feature request issue template

* Touch up feature request template

* Add 'other issues' template

* move support doc

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,27 @@
+---
+name: Bug report
+about: Create a report to help us improve the QMK Firmware
+---
+
+**Describe the bug**
+
+A clear and concise description of what the bug is.
+
+**System Information**
+ - Keyboard:  
+   - Revision (if applicable):  
+ - Operating System:
+ - avr-gcc version: 
+   (Run `avr-gcc --version` to find out)
+ - arm gcc version: 
+   (Run `arm-none-eabi-gcc --version` to find out)
+ - QMK Firmware version:
+   (you can run `git describe --abbrev=0 --tags` to find this out)
+ - Any keyboard related software installed? 
+   - [ ] Auto Hot Key
+   - [ ] Karabiner
+   - [ ] Other
+
+**Additional context**
+
+Add any other context about the problem here.