Input for a single file in a revision
- pathFile path (relative, no leading /)
- contentBase64-encoded file content (null for deletion when action is UPDATE)
- encryptWhether to encrypt this file at rest (default: false)
- fileModeFile permissions in octal format (e.g., "0600", "0755") Default: 0644 for regular files
- actionRevisionFileActionAction to perform on the file (default: UPDATE)