Add issue templates

Author: nightowlengineer

.github/ISSUE_TEMPLATE/bug-report.md

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+---
+name: Bug report
+about: Report if something isn't working as expected
+
+---
+
+**Describe what's going wrong**
+A clear and concise description of what the bug is.
+
+**Concise code to reproduce**
+```java
+// Include the minimum necessary code to reproduce the bug
+// Please avoid including application-specific code
+```
+
+**Expected behaviour**
+What did you expect to happen? Does the client conflict with what the [Sonos docs](https://developer.sonos.com/reference/) say should happen?
+
+**Environment:**
+ - sonos-api-java version: [e.g. 0.0.3]
+ - Sonos API version: [e.g. v1]
+
+**Additional context**
+Add any other context about the problem here.
+
+**Log**
+```
+// If you have log messages or stack traces, please include them 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 about the feature request here.