Import all EDAM topic ? all EDAM ?

[bryan-brancotte]

Following a need of @Sylmila

• expose it in the API
• allows to search for a topic like it is done in the autocomplet admin UI

[bryan-brancotte]

Since #299 terms can be queried this way:

https://catalogue.france-bioinformatique.fr/api/topic/?search=exome