Add support for PR and Issue templates to QMK_firmware GitHub (#4494)

* 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

* Minor tweaks

* More minor tweaks

* Spleeling fix

Co-Authored-By: drashna <drashna@live.com>

* CapiTALization fIXes

Co-Authored-By: drashna <drashna@live.com>

* Use new issue URL

Co-Authored-By: drashna <drashna@live.com>

* Add blanck issue template

* Update the PR template

* Formatting and additional changes

* Update docs/support.md

Co-Authored-By: drashna <drashna@live.com>

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,19 @@
+---
+name: Feature request
+about: Suggest a new feature or changes to existing features 
+---
+<!--- Provide a general summary of the changes you want in the Title above -->
+
+<!-- This template is entirely option and can be removed, but is here to help both you and us. -->
+<!-- This text and anything on lines wrapped like this one will not show up in the final text. This text is to help us and you. -->
+
+## Feature Request Type
+
+- [ ] Core Functionality
+- [ ] Add-on hardware support (e.g. audio, RGB, OLED screen, etc.)
+- [ ] Alteration (enhancement/optimization) of existing Feature(s)
+- [ ] New behavior
+
+## Description 
+
+<!-- A few sentences describing what it is that you'd like to see. Additional information (such as links to spec sheets, licensing info, other related issues or PR's, etc) would be helpful. -->