Update issue templates

.github/ISSUE_TEMPLATE/---bug-report.md

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+---
+name: "\U0001F41E Bug report"
+about: Create a report to help us improve
+title: "[Bug] Short description"
+labels: ''
+assignees: ''
+
+---
+
+### Komga environment
+- **OS**: 
+- **Komga version**: 
+- [ ] **I am running Komga with Docker**
+  - Docker image tag [e.g. latest, beta]: 
+- [ ] **I am running Komga from the `jar`**
+  - Java version: 
+- [ ] **I have a problem in the web interface**
+  - Browser (with version): 
+- [ ] **I have a problem with an OPDS client application**
+  - OPDS Application (with version): 
+- [ ] **I have a problem with the Tachiyomi extension**
+  - Tachiyomi version: 
+  - Tachiyomi extension version: 
+
+### Describe the bug
+A clear and concise description of what the bug is.
+
+### Steps to reproduce
+1. Go to '...'
+2. Click on '....'
+
+### Expected behavior
+A clear and concise description of what you expected to happen.
+
+### Actual behavior
+What happened instead.
+
+### Additional context
+Add any other context about the problem here.
+
+### Screenshots
+If applicable, add screenshots to help explain your problem.
+
+### Log file
+If applicable, add an excerpt of the log file (max 20 lines), or a link to a gist containing the log file.

.github/ISSUE_TEMPLATE/---feature-request.md

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+---
+name: "\U0001F31F Feature request"
+about: Suggest an idea for this project
+title: "[Feature Request] Short description"
+labels: ''
+assignees: ''
+
+---
+
+### 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 or other apps that can do what you want
+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.