`test` utility

[sudojunior]

The idea of 'dry-run' but to ensure all selected content is within Discord's specifications.

Embed Limits

• files.* - 10 MB per file
• #files.* - 10 per message
• content - 2000 characters
• #embeds.* - 10 per message
• embeds.{sum(title, description, field.name, field.value, footer.text, author.name)} - 6000 characters
• embeds.*.title - 256 characters each
• embeds.*.description - 4096 characters each
• #embeds.*.fields - 25 per embed
• embeds.*.fields.*.name - 256 characters
• embeds.*.fields.*.value - 1024 characters
• embeds.*.footer.text - 2048 characters
• embeds.*.author.name - 256 characters