Merge pull request #16 from OpenSesame/fix/updates

chunker: switched to tiktoken implementation

fix authorization token compare

fix OpenSearchExt (#15)

Merge pull request #14 from OpenSesame/feature/api_delete

test_api: added comments

.gitignore: added sysimage

tests: added api logic test. + minor refactoring of a mocking part

server: added 'delete' endpoint implementation

embeddings: api key is not more a global variable

openapi.yaml: added 'delete' endpoint. Re-generated server structures

fixed activation of a storage module

OpenSearch: added 'size' argument to restrict number of docs

Merge pull request #13 from OpenSesame/fix/downloader_api

chunker: Downloads.jl replaced by HuggingFaceApi.jl