Draft: This modify onionoo store to consider the tuple fingerprint:nickname when storing and retrieving documents.

In order to address #40022 (closed) it was decided to use the tuple fingerprint:nickname to be able to report on relays with same fingerprint but different nicknames.

First the DocumentStore is modified so that nodes are identified by the tuple fingerprint:nickname. Also up to know onionoo would store status files and documents under their rispective folders, and under a file called as the node fingerprint. Now the fingerprint is a subfolder, and the nickname of the node is the status and document file.

Then the retrieving and storing mechanism is modified across onionoo documents and status classes.

Finally tests are fixed to take into account this change.