Create templates for PRs, bugs, features requests, and components (#209)

* Create templates for PRs, bugs, features requests, and component contribution

* fix up platform specific references

* update platform specific terminology

* minor phrasing fixes

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Found a bug in Fluent UI React Native? Please let us know.
+---
+
+<!--
+Thanks for contacting us! We're here to help.
+Before you report an issue, check if it's been reported before:
+  * Search: https://github.com/microsoft/fluentui-react-native/search?type=Issues
+Note that if you do not provide enough information to reproduce the issue, we may not be able to take action on your report.
+-->
+
+### Environment Information
+
+- **Package version(s)**: (fill this out, include which package manager you're using)
+- **OS version**: (fill this out if relevant)
+
+- **Platform**:
+  - [ ] iOS
+    - **Xcode version**:
+  - [ ] macOS
+    - **Xcode version**:
+  - [ ] win32
+  - [ ] windows
+  - [ ] android
+
+### Please provide a reproduction of the bug:
+
+<!--
+Providing an isolated reproduction of the bug makes it much easier for us to help you. A reproduction in the demo application is preferred.
+-->
+
+#### Actual behavior:
+
+<!-- fill this out -->
+
+#### Expected behavior:
+
+<!-- fill this out -->
+
+### Priorities and help requested:
+
+Are you willing to submit a PR to fix? (Yes, No)
+
+Requested priority: (Blocking, High, Normal, Low)
+
+Products/applications affected: (if applicable)

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Do you have Feature or improvement for Fluent UI React Native? Let us know.
+---
+
+#### Platform
+- [ ] iOS
+- [ ] macOS
+- [ ] win32
+- [ ] windows
+- [ ] android
+ 
+#### Describe the feature that you would like added
+
+<!-- fill this out -->
+
+#### What component or utility would this be added to
+
+<!-- fill this out -->
+
+#### Have you discussed this feature with our team, and if so, who
+
+<!-- fill this out -->
+
+#### Additional context/screenshots
+
+<!-- fill this out -->

.github/ISSUE_TEMPLATE/new_component.md

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+---
+name: New Component
+about: Interested in contributing a new component to Fluent UI React Native? This template includes necessary information to get started, and steps to completion
+---
+
+<!-- Use this template for new components or new component variants -->
+
+## Component details
+
+### Description
+
+<!-- fill this out -->
+
+### Which product teams/scenarios need this control
+
+<!-- The more teams/scenarios that would use this control the better chance it will get prioritized -->
+
+### Design assets
+
+<!-- Please provide links to redlines or screenshots of intended component design -->
+<!-- Are you internal to Microsoft and your design isn't yet public? Please reach out to us internally via the Fluent UI Community. -->
+
+### Component ownership
+
+<!-- Are there one or more people who can help maintain this component over time? Who will address bugs? -->
+
+## Component composition
+
+### Imports/Dependencies
+
+<!-- What dependencies will your component be using -->
+
+### Proposed Public API
+
+<!-- Define the proposed public API for this control -->
+
+### Intended Platforms
+- [ ] iOS
+- [ ] macOS
+- [ ] win32
+- [ ] windows
+- [ ] android
+
+## Component code
+
+### Example code
+
+```javascript
+```
+
+### New Component Checklist
+
+General:
+- [ ] Automated Tests
+- [ ] Documentation and examples
+- [ ] Keyboard Accessibility
+- [ ] Internationalization and Right-to-left Layouts
+- [ ] Ready for Contribution
+
+iOS:
+- [ ] Light and Dark Appearance
+- [ ] Size classes and window sizes (iPhone vs iPad, notched devices, multitasking, different window sizes, etc)
+- [ ] Increase Contrast Support
+- [ ] Different resolutions (1x, 2x, 3x)
+- [ ] Voiceover
+- [ ] Unit tests
+- [ ] UI tests
+- [ ] Other (please specify)
+
+macOS:
+- [ ] Light and Dark Appearance
+- [ ] Window sizes
+- [ ] Different resolutions (1x, 2x, 3x)
+- [ ] Voiceover
+- [ ] Unit tests
+- [ ] UI tests
+- [ ] Other (please specify)
+
+Windows:
+- [ ] Other (please specify)
+
+Win32:
+- [ ] Other (please specify)
+
+Android:
+- [ ] Other (please specify)

.github/PULL_REQUEST_TEMPLATE.md

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+### Platforms Impacted
+- [ ] iOS
+- [ ] macOS
+- [ ] win32
+- [ ] windows
+- [ ] android
+
+### Description of changes
+
+(a summary of the changes made, often organized by file)
+
+### Verification
+
+(how the change was tested, including both manual and automated tests)
+
+| Before                                       | After                                      |
+|----------------------------------------------|--------------------------------------------|
+| Screenshot or description before this change | Screenshot or description with this change |
+
+### Pull request checklist
+
+This PR has considered (when applicable):
+- [ ] Automated Tests
+- [ ] Documentation and examples
+- [ ] Keyboard Accessibility
+- [ ] Voiceover
+- [ ] Internationalization and Right-to-left Layouts