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1. Create new endpoint to retrieve HRID by authority file id 
2. Implement sequence number generation mechanism for authority local files
3. On the UI user will select file name. And before creation UI should put to 001 field value from the HRID endpoint. 

Tickets

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1. .

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Ability to store authority local files

Settings application UI preview:

Endpoints:

GET: /authority-source-files/{id}/hrid
Description:  Endpoint returns current hrid value and increment it. Should be called once user clicked on the "create" button to put value in the 001 field.

{
    "id": "cb58492d-018e-442d-9ce3-35aabfc524aa",
    "prefix": "loc",
    "hrid": "000000001"
}

POST: /authority-source-files
New query parameter: startNumber (default = 1)

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To work with table it's better to use SERIALIZABLE Isolation:
@Transactional(isolation = Isolation.SERIALIZABLE)

Select local authority file on the UI

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