add github templates

Author: fouad

.github/ISSUE_TEMPLATE.md

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+**What needs to get done?**
+
+- Describe the issue or task that needs work
+
+**Why does it need to get done?**
+
+- Explain the importance/urgency of the task
+
+**How do I do it?**
+
+- Give a quick explanation for how someone could do it.
+- If it's a repeat task or just more complex, write some step-by-step instructions below to help walk them through it.
+
+<details>
+  <summary>Setup</summary>
+
+  - Clone the repo by running `git clone https://github.com/segmentio/niffy.git`
+  - Run `npm install`
+  - Run tests with `make tests` (tests will "fail" for now, as expected)
+  
+</details>

.github/PULL_REQUEST_TEMPLATE.md

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+**Which issue or problem is this solving?**
+
+- Please link to a Github issue that describes the what/why
+- If there's no issue, let us know what it is & why you made it
+
+**Remaining tasks**
+
+- [ ] Let us know if there's anything else you need to do
+- [ ] That way we can have open status updates
+- [ ] And maybe get others to help
+
+**Request for comments**
+
+- Describe what you'd like feedback on or if this is just something to get approved & merged