Add good first issue template

Signed-off-by: RainbowMango <qdurenhongcai@gmail.com>

.github/ISSUE_TEMPLATE/good-first.md

@@ -0,0 +1,33 @@
+---
+name: Good First Issue
+about: Publish a good first issue
+labels: good first issue
+
+---
+
+<!-- Please use this template while publishing a good first issue. Thanks!
+-->
+
+**Task description**:
+
+**Solution**:
+
+**Who can join or take the task**:
+
+Good first issue is intended for `first-time contributors` to get started on his/her contributor journey.
+
+After a contributor has successfully completed 1-2 good first issue's, 
+they should be ready to move on to `help wanted` items, saving remaining `good first issue`'s for other new contributors.
+
+**How to join or take the task**:
+
+Just reply on the issue with following message:
+```
+/assign
+```
+Then, the issue will be assigned to you.
+
+**How to ask for help**:
+
+If you need help or have questions, please feel free to ask on this issue.
+The issue author or other members of the community will guide you through the contribution process.