Fix lint
Add docs for keyvalue config options
Use keyvalue store to cache unsplash photo results
Cleanup
Use keyvalue store for upload avatar
Use keyvalue store for initials avatar
Fix initializing metrics
Use keyvalue for metrics
Add IncryBy and DecrBy methods to increase or decrease a value
Fix lint
Return custom error if a key does not exist
Init keyvalue storage
Follow the keyvalue storage setting for things like cache and other
Add docs
Add configuration of the storage backend
Add redis keyvalue storage implementation
Add doc comments
Add methods to use storage through the package itself
Add memory implementation for keyvalue store
Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/674
Co-Authored-By: konrad <konrad@kola-entertainments.de>
Co-Committed-By: konrad <konrad@kola-entertainments.de>
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