docs: create issue templates

.github/ISSUE_TEMPLATE/✨-request-new-project.md

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+---
+name: "✨ Request new project"
+about: Do you have a tool that is not yet listed and want it to be listed in the repo?
+title: "[REQUEST] "
+labels: request
+assignees: TomRomeo, darmiel
+
+---
+
+### Project Website
+
+< Link to the project (e.g. GitHub) >
+
+### Project Description
+
+< Short description of the project >
+
+<!-- Thank you so much for your help to make this list even better! 💖 -->

.github/ISSUE_TEMPLATE/🔍-report-a-mistake--e--g--spelling--grammar------.md

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+---
+name: "\U0001F50D Report a mistake (e. g. Spelling, Grammar, ...)"
+about: Did you find an error in the list?
+title: "[BUG] "
+labels: bug
+assignees: TomRomeo, darmiel
+
+---
+
+### What's the problem?
+
+< Briefly describe the error / suggest changes >
+
+### Where's the problem?
+
+> Please enter the Line Number of the problem to make it easier for us to find the problem. 
+> You can find the line numbers [here](https://github.com/awesome-jellyfin/awesome-jellyfin/blob/main/README.md?plain=1). You can click on the line numbers to get the URL for the clicked line.
+
+<!-- Thank you so much for your help to make this list even better! 💖 -->

.github/ISSUE_TEMPLATE/🚩-report-a-project--e--g--inactive--broken--harmful------.md

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+---
+name: "\U0001F6A9 Report a project (e. g. Inactive, Broken, Harmful, ...)"
+about: Did you find a project, which shouldn't be on the list anymore because it's
+  broken, harmful, ...? Are you a maintainer of one of the listed projects and want
+  it removed?
+title: "[REMOVAL] "
+labels: ''
+assignees: TomRomeo, darmiel
+
+---
+
+### Affected project
+
+< Which project should be removed? >
+
+### Reason for removal
+
+< Why should this project be removed? >
+
+<!-- Thank you so much for your help to make this list even better! 💖 -->