Add issue template (#110)

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug Report
+about: Create a bug report to help us improve
+labels: bug
+---
+
+<!-- Please search existing issues to avoid creating duplicates. -->
+
+### Environment Information
+
+- Python version:
+- Operating System:
+
+### Description
+
+Describe what you were trying to get done.
+Tell us what happened, what went wrong, and what you expected to happen.
+
+### What I Did
+
+```
+Paste the command(s) you ran and the output.
+If there was a crash, please include the traceback here.
+```

.github/ISSUE_TEMPLATE/config.yml

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+contact_links:
+  - name: Ask questions
+    url: https://github.com/giswqs/geog-312/discussions/categories/q-a
+    about: Please ask and answer questions here.
+  - name: Ideas
+    url: https://github.com/giswqs/geog-312/discussions/categories/ideas
+    about: Please share your ideas here.
+  - name: Ask questions from the GIS community
+    url: https://gis.stackexchange.com
+    about: To get answers from questions in the GIS commminuty, please ask and answer questions here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: Submit a feature request to help us improve
+labels: Feature Request
+---
+
+<!-- Please search existing issues to avoid creating duplicates. -->
+
+### Description
+
+Describe the feature (e.g., new functions/tutorials) you would like to propose.
+Tell us what can be achieved with this new feature and what's the expected outcome.
+
+### Source code
+
+```
+Paste your source code here if have sample code to share.
+```