Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Help us improve the JPAStreamer library
+title: ''
+labels: bug
+assignees: julgus
+
+---
+
+**Describe the bug**
+
+**Expected behavior**
+
+**Actual behavior**
+
+**How To Reproduce**
+
+**Build tool**
+e.g. Maven 3.6.1 
+
+**JPAStreamer version**
+e.g. JPAStreamer 3.0.0 
+
+**JPA Provider**
+e.g. Hibernate 6.0.2.Final 
+
+**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 a useful feature
+title: ''
+labels: enhancement
+assignees: julgus
+
+---
+
+**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.

.github/ISSUE_TEMPLATE/other-issue.md

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+---
+name: Other issue
+about: Any feedback or questions are welcome
+title: ''
+labels: ''
+assignees: julgus
+
+---
+
+