Files for upload are fully loaded into memory

[andreme]

🐞 Describe the bug

When uploading large files (larger than the available memory), the upload fails.

In our case, the pod running in Kubernetes is OOM killed.

spaces-cli/src/Interface.js

Line 25 in cbd7ba2

const fileContent = fs.readFileSync(filePath)

💡 Expected behavior

Allow upload of large files.

📋 Additional context

S3 upload accepts file streams for the body.