Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Screenshots and screen recordings**
+If applicable, add screenshots (and screen recordings, if possible) to help explain your problem.
+
+**Version**
+Megalodon version: [e.g. v1.1.4+fork.#]
+
+**Additional context**
+- Does this issue also occur with the respective upstream release? (Please test using the respective `upstream-xxxxxx.apk` provided in [Releases](https://github.com/sk22/megalodon/releases)) No / Yes (`mastodon#…`)
+
+  > In this case, please consider filing an [upstream bug report](https://github.com/mastodon/mastodon-android/issues) instead. If this bug is seriously impacting your usage or you think I might want to try to fix it for Megalodon, feel free to still create this issue!
+
+**Crash log**
+If you know your way around Android development tools, please consider attaching a crash log, if possible.

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

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+---
+name: Feature/UI request
+about: Suggest an idea for this project
+title: ''
+labels: feature
+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**
+If applicable: 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/something-else.md

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+---
+name: It's something else…
+about: Issues that can't be categorized as feature requests or bug reports
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+