Add issue templates

Co-authored-by: TobiaszG24 <[email protected]>

.github/ISSUE_TEMPLATE/bug.md

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+---
+name: Bug
+about: Create a bug report to help the project
+labels: bug
+---
+
+# Bug
+
+_A clear and concise description of what the bug is._
+
+### Current Behavior
+
+... _Steps to reproduce the bug_ ...
+
+### Expected behavior
+
+... _A clear and concise description of what you expected to happen._ ...
+
+### Environment
+
+- ODMantic version: ...
+- MongoDB version: ...
+- Pydantic infos (output of `python -c "import pydantic.utils; print(pydantic.utils.version_info())`):
+
+```
+...
+```
+
+- Version of additional modules (if relevant):
+  - ...
+
+**Additional context**
+
+_Add any other context about the problem here._

.github/ISSUE_TEMPLATE/feature.md

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+---
+name: Feature request
+about: Suggest a new idea for the project
+labels: enhancement
+---
+
+# Feature request
+
+### Context
+
+_Is your feature request related to a problem? Please describe with a clear and concise description of what the problem is. Ex. I'm always frustrated when ..._
+
+### Solution
+
+_Describe the solution you'd like with a clear and concise description of what you want to happen._
+
+#### Alternative solutions
+
+_Describe alternatives you've considered with 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._