You can create a directory on your phone and inside that directory you should add all the files you want to deploy relative to the phone root directory, so like create an Applications folder to deploy those files to /Application
You also need a directory called DEBIAN
containing your control
file, you can get some info on what you need to put in there on Google but here's an outline of it:
Package: com.you.appname
Name: Your App Name
Version: 1.0
Section: Applications
Depends: (Dependancies if any)
Architecture: iphoneos-arm
Description: Your description here.
Author: You <your@email.com>
Maintainer: You <your@email.com>
Open mobile terminal
cd /where/your/directory/is
Then use dpkg -b [directory]
You'll be outputted a debian package (.deb) that'll install files to where they need to go on the device