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

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+---
+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.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest a new feature or changes to existing features 
+
+---
+
+## Feature Request Type
+
+- [ ] Core Functionality
+- [ ] Add-on hardware support (eg audio, rgb, oled screen, etc)
+- [ ] Alteration (enhancement/optimization) of existing Feature(s)
+- [ ] New behavior
+
+## Description 
+A few sentances 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. 

.github/ISSUE_TEMPLATE/other_issues.md

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+---
+name: Other issues
+about: Anything else that doesn't fall into the above categories. 
+
+---
+
+Please check https://docs.qmk.fm/SUPPORT.md for additional resources first. If that doesn't answer your question, check the bug report option, as that may be more appropriate. 

.github/PULL_REQUEST_TEMPLATE.md

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+## Code Change Type
+- [ ] Core
+- [ ] Feature
+- [ ] Bugfix
+- [ ] Keyboard
+- [ ] Keymap/Layout/Userspace
+- [ ] Enhancement/Optimization
+- [ ] Documentation
+
+## Description
+A few sentences describing the overall goals of the pull request's commits.
+
+## Todo
+- [ ] Tests
+- [ ] Documentation
+
+## Issues Fixed or Closed by this PR
+
+* 
+
+## Long Description
+If needed, a longer description and a list of changes should be added here to make it clear what exactly this PR's goals are. 

docs/support.md

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+# Support
+
+If you need help with something, the best place to get quick support is going to be on our [Discord Server](https://discord.gg/Uq7gcHh).  There is usually somebody online, and there are a bunch of very helpful people there.
+
+Don't forget to read our [Code of Conduct](https://qmk.fm/coc/).
+
+## Help! I don't know where to start! 
+
+If this is the case, then you should start with our [Newbs Guide](https://docs.qmk.fm/#/newbs). There is a lot of great info there, and that should cover everything you need to get started.
+
+If that's an issue, hop onto the [QMK Configurator](https://config.qmk.fm), as that will handle a majority of what you need there. 
+
+## Help! I'm having issues flashing!
+
+First, head to the [Compiling/Flashing FAQ Page](https://docs.qmk.fm/#/faq_build). There is a good deal of info there, and you'll find a bunch of solutions to common issues there. 
+
+## Help, I have an issue that isn't covered by the links above
+
+Okay, that's fine. Then please check the [open issues in our GitHub](https://github.com/qmk/qmk_firmware/issues) to see if somebody is experiencing the same thing (make sure it's not just similar, but actually the same).  
+
+If you can't find anything, then please open a [new issue](https://github.com/qmk/qmk_firmware/issues)!
+
+## What if I found a bug? 
+
+Then please open an issue, and if you know how to fix it, open up a Pull Request on GitHub with the fix.
+
+## But `git` and `GitHub` are intimidating! 
+
+Don't worry, we have some pretty nice [Guidelines](https://docs.qmk.fm/#/newbs_best_practices) on how to start using `git` and GitHub to make things easier to develop. 
+
+Additionally, you can find additional `git` and GitHub related links [here](https://docs.qmk.fm/#/newbs_learn_more_resources).
+
+## I have a Keyboard that I want to add support for
+
+Awesome! Open up a Pull Request for it. We'll review the code, and merge it!  
+
+### What if I want to do brand it with `QMK`? 
+
+That's amazing! We would love to assist you with that! 
+
+In fact, we have a [whol page](https://qmk.fm/powered/) dedicated to adding QMK Branding to your page and keyboard. This covers pretty much everything you need (knowledge and images) to officially support QMK.
+
+If you have any questions about this, open an issue or head to [Discord](https://discord.gg/Uq7gcHh).