[New Feature] `exfil`

[HuskyHacks]

For moving data out of the target environment

Crude proto function implemented in https://github.com/mttaggart/OffensiveNotion/commit/b89c5c3a82f9d5a04ab185671d3fb1eb86d8c0a5

• [ ] If file is large, make a sub-page and post to that page
• [ ] Pressure test
• [ ] Documentation

[mttaggart]

Closed in favor of s3upload/azupload