Update issue templates

Author: dhui

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+**Describe the Bug**
+A clear and concise description of what the bug is.
+
+**Steps to Reproduce**
+Steps to reproduce the behavior:
+1. My migrations look like '...'
+2. I ran migrate with the following options '....'
+3. See error
+
+**Expected Behavior**
+A clear and concise description of what you expected to happen.
+
+**Migrate Version**
+e.g. v3.4.0
+Obtained by running: `migrate -version`
+
+**Loaded Source Drivers**
+e.g. s3, github, go-bindata, gcs, file
+Obtained by running: `migrate -help`
+
+**Loaded Database Drivers**
+e.g. spanner, stub, clickhouse, cockroachdb, crdb-postgres, postgres, postgresql, redshift, cassandra, cockroach, mysql
+Obtained by running: `migrate -help`
+
+**Stacktrace**
+Please provide if available
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.