Feature Request - Add csv support

[Berkan Ünal]

Description

• text/csv mimetype should do.
• I think csv files don't have magic bytes in it, it's just a text file.
• Use case:
  • Faking a csv upload test in an adonis project

Relevant information

• I can try to help if this request is accepted

[Harminder Virk]

Sure. Let's add it