Create a default page at /

[niccokunzmann]

Feature Request

When I go through the documentation, it seems clear that certain steps need to be taken like registering as a signal device.

For this reason, it would be nice to have this page at /:

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signal-cli-rest-api

To register this signal-cli-rest-api, please open your Signal app and go to
settings -> linked devices -> link a new device
and scan the QR code below:

If you have further questions, please read the documentation.

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The above is the QR code from https://signal-cli.hosted.quelltext.eu/v1/qrcodelink?device_name=signal-api