chore: import upstream snapshot with attribution

.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: '9001'
+
+---
+
+<!-- NOTE:
+**please use english, or include an english translation.** aside from that,  
+include all of the information that might possibly be necessary to help diagnose your issue,
+especially things like the server config and server logs; that said,
+any parts below which are obviously and definitely irrelevant can be skipped -->
+
+### Describe the bug
+a description of what the bug is
+
+### To Reproduce
+List of steps to reproduce the issue, or, if it's hard to reproduce, then at least a detailed explanation of what you did to run into it
+
+### Expected behavior
+a description of what you expected to happen
+
+### Screenshots
+if applicable, add screenshots to help explain your problem, such as the kickass crashpage :^)
+
+### Server details (if you are using docker/podman)
+remove the ones that are not relevant:
+* **server OS / version:** 
+* **how you're running copyparty:** (docker/podman/something-else)
+* **docker image:** (variant, version, and arch if you know)
+* **copyparty arguments and/or config-file:** 
+
+### Server details (if you're NOT using docker/podman)
+remove the ones that are not relevant:
+* **server OS / version:** 
+* **what copyparty did you grab:** (sfx/exe/pip/arch/...)
+* **how you're running it:** (in a terminal, as a systemd-service, ...)
+* run copyparty with `--version` and grab the last 3 lines (they start with `copyparty`, `CPython`, `sqlite`) and paste them below this line:
+* **copyparty arguments and/or config-file:** 
+
+### Client details
+if the issue is possibly on the client-side, then mention some of the following:
+* the device type and model: 
+* OS version: 
+* browser version: 
+
+### The rest of the stack
+if you are connecting directly to copyparty then that's cool, otherwise please mention everything else between copyparty and the browser (reverseproxy, tunnels, etc.)
+
+### Server log
+if the issue might be server-related, include everything that appears in the copyparty log during startup, and also anything else you think might be relevant
+
+### Additional context
+any other context about the problem here

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: enhancement
+assignees: '9001'
+
+---
+
+<!-- NOTE:
+**please use english, or include an english translation.** aside from that,  
+all of the below are optional, consider them as inspiration, delete and rewrite at will -->
+
+**is your feature request related to a problem? Please describe.**
+a description of what the problem is, for example, `I'm always frustrated when [...]` or `Why is it not possible to [...]`
+
+**Describe the idea / solution you'd like**
+a description of what you want to happen
+
+**Describe any alternatives you've considered**
+a 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: Something else
+about: "┐(ﾟ∀ﾟ)┌"
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+

.github/branch-rename.md

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+modernize your local checkout of the repo like so,
+```sh
+git branch -m master hovudstraum
+git fetch origin
+git branch -u origin/hovudstraum hovudstraum
+git remote set-head origin -a
+```

.github/pull_request_template.md

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+To show that your contribution is compatible with the MIT License, please include the following text somewhere in this PR description:  
+This PR complies with the DCO; https://developercertificate.org/