add issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Thanks! for testing out CircuitPython. Now that you have got a problem... you can
+file a bug report for it. Feel free to modify the below format to better suit your issue.
+Also, don't forget to remove me... :)
+
+**Firmware**
+
+```python
+Adafruit CircuitPython 6.2.0-beta.2 on 2021-03-01; Raspberry Pi Pico with rp2040
+```
+**Code/REPL**
+
+```python
+import busio, bitbangio
+i2c = bitbangio.I2C(board.GP1, board.GP0)
+```
+**Behavior**
+
+```python
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+TimeoutError: Clock stretch too long
+```
+**Description** _(optional)_
+
+- Error while using i2c...
+- Only happens when...
+- might be related to #4291...
+
+**Additional Info** _(optional)_
+
+Any other information like hardware connection, scope output etc.

.github/ISSUE_TEMPLATE/config.yml

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+contact_links:
+  - name: Adafruit Forum
+    url: https://forums.adafruit.com/
+    about: Not sure if a bug is indeed a bug... post it here.
+  - name: Adafruit Discord
+    url: https://adafru.it/discord
+    about: Similar to the forum but more exposure and prompt replies.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+We are always adding new features and enhancements to CircuitPython 🚀
+and would love ❤ to see what new challenge you have got for us... 🙂