New: Licenses.md, Traefik.md; Updated Steuererklärungen.md

Licenses.md

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+# AFFiNE license
+
+## Motivation
+
+Find out which are the FOSS parts of AFFiNE and whether a self-hosted
+AFFiNE service can be used and modified without license costs.
+
+## GitHub licenses
+
+In GitHub two license pages exist:
+- [License](https://github.com/toeverything/AFFiNE?tab=License-1-ov-file)
+- [MIT license](https://github.com/toeverything/AFFiNE?tab=MIT-2-ov-file)
+
+It seems that AFFiNE is not completely FOSS but only some parts of it.
+It is not very straight forward which parts are FOSS.
+
+## Your tasks
+
+### FOSS parts of AFFiNE
+
+Find out which are the FOSS parts of AFFiNE and which parts are not FOSS.
+Explain it in an easy to understand description.
+
+### Self-hosted AFFiNE service free of costs?
+
+Determine whether a self-hosted AFFiNE service can be used free
+of license costs
+and which conditions have to be met so that it is free.
+
+The attached shell script creates a Podman Pod which
+runs an AFFiNE service. Check whether this service is free of license costs.
+
+### AFFiNE modifications allowed?
+
+Find out whether modifications of AFFiNE for running a
+self-hosted AFFiNE-like service are allowed.
+
+Concrete Use-Case: Place a Man-in-the-Middle software between the
+AFFiNE Web-GUI and the AFFiNE database which adds functionality.
+