Vibhuti,
Kentico offers methods to create import packages and NuGet packages for custom modules, but this doesn't include system files such as OrderItemEdit.aspx: https://docs.kentico.com/k12/deploying-websites/exporting-and-importing-sites/export-folder-structure.
If you want some package that you can distribute which will contain your customizations to OrderItemEdit.aspx, you may be able to create a standard NuGet package: https://docs.microsoft.com/en-us/nuget/create-packages/creating-a-package. Otherwise, I'd recommend manually creating an archive which contains a README for instructions on where to place the customized file(s).