Add LUX - LUX Digital Post - Update facilities.json

[SteveLLamb]

NOTE: code LUX already exists in facilities.json — possible duplicate (or should this be an update?).

Request type: Add new
Registry: facilities.json

Code: LUX
Description: LUX Digital Post
Website: https://www.luxstudio.fr

Submitter opted out of public contact listing — contact omitted.

---

Proposed entry for facilities.json:

{
  "code": "LUX",
  "description": "LUX Digital Post",
  "url": "https://www.luxstudio.fr"
}

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[palemieux]

@SteveLLamb Can you let them know that the code LUX is already taken?