Create a URL / file upload form component

[Sallaa]

In the audio tool form we introduce several user experience improvements to ease sending file / url containing file for analysis.

• Make this form generic and add it to the other tools that use url or file upload
• This could also be generalized to all tools with URL if we want, by making the file upload optional
• We should be able to define in the component props the file type needed (MIME type) e.g. audio/mp3
• Reuse the URL validation function

Tools with file upload

• [ ] Video > Metadata
• [ ] Image > Metadata
• [x] Image > Magnifier
• [x] Image > Forensic
• [x] Image > OCR
• [x] Image > Synthetic image
• [x] Image > Deepfake