Add IPFS for seamless distributed file serving

**is your feature request related to a problem? Please describe.**
At the ChaosCommunicationCongress people seem to be frustrated by fileserver with insuffcient bandwidth and are asking for distributed protocols.

**Describe the idea / solution you'd like**
I'd wish that files optionally can be distributed via IPFS. For simplicity let's assume that there is a Kubo instance on the server ([see](https://docs.ipfs.tech/quickstart/pin-cli/)), it would then be possible to add a header while serving files ([see](https://docs.ipfs.tech/how-to/companion-x-ipfs-path-header/)). That would allow for seamless integration of a distributed system without breaking user expierience.

**Describe any alternatives you've considered**
It would also be nice if for each file a torrent-file could be generated. that would also require an additional server/protocol and would break the user experience since we would leave the browser.

**Additional context**
I have not yet tested the idea yet. If helpful we could test IPFS adoption together at 40C3.

该 issue 建议集成 IPFS 以提供文件服务，可能是在提供文件时添加一个 header。首先检查代码库中的文件服务逻辑，了解 HTTP header 在哪里添加。查找如上所述的 Kubo instance 设置。检查是否已有与分布式协议的集成。所谓“完成”，是指文件可以选择使用 IPFS header 提供，同时不会破坏用户体验。

由索引模型根据 Issue 内容生成。