docs: add issues and pull requests templates

.github/ISSUE_TEMPLATE/bug-report.md

+<!--
+Hi there and thank you for reporting a bug! 🐛🐛🐛
+
+If you want to submit a feature request, use this link instead:
+  https://github.com/rebeccahughes/react-native-device-info/issues/new?template=feature-request.md
+-->
+
+## Summary
+
+|             |     |
+| ----------- | --- |
+| Version     | ?   |
+| Affected OS | ?   |
+| OS Version  | ?   |
+
+## Current behavior
+
+<!-- Describe the issue you are facing, including any available error
+message, logs, stack trace .. -->
+
+## Expected behavior
+
+<!-- What should have happened instead of this bug -->

.github/ISSUE_TEMPLATE/feature-request.md

+<!--
+Hi there and thank you for your feature request! 🆕🆕🆕
+
+If you want to report a bug, use this link instead:
+  https://github.com/rebeccahughes/react-native-device-info/issues/new?template=bug-report.md
+
+-->
+
+## Description
+
+<!-- What would you like to see implemented? How? -->
+
+## Use Case
+
+<!-- Describe a scenario where this feature could come handy -->

.github/issue_template.md

+<!--
+  Hola!
+
+  If you're looking to submit a bug report, please go to this link and access
+  the template there:
+
+  https://github.com/rebeccahughes/react-native-device-info/issues/new?template=bug-report.md
+
+  If this is a feature request, please fill out this template:
+
+  https://github.com/rebeccahughes/react-native-device-info/issues/new?template=feature-request.md
+
+  Thanks!
+-->

.github/pull_request_template.md

+<!--
+Hi there and thank you for your change proposal!
+
+Please fill out the following template to make the review process
+as quick and smooth as possible.
+-->
+
+## Description
+
+Fixed issue #<issue-number>
+
+<!-- OR, if you're implementing a new feature: -->
+
+Added `yourNewMethodName()` that allows ...
+
+## Compatibility
+
+| OS      | Implemented |
+| ------- | :---------: |
+| iOS     |    ✅❌     |
+| Android |    ✅❌     |
+| Windows |    ✅❌     |
+
+## Checklist
+
+<!-- Check completed item: [X] -->
+
+* [ ] I have tested this on a device/simulator for each compatible OS
+* [ ] I added the documentation in `README.md`.
+* [ ] I mentionned this change in `CHANGELOG.md`.