Update Samples for the Adobe Document Services PDF Tools SDK (1.2.0)

[KhushbooBaheti]

Description

Adding new Samples for following additional features in Adobe Document Services PDF Tools SDK 1.2.0v along with its Documentation :-

• Securing PDF with passwords and setting the restriction on certain features like printing, editing and copying in the PDF document.
• Remove password security from a protected PDF file.
• Split a PDF file into multiple files by simply specifying either the number of files, pages per file, or page ranges.

  Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] I have signed the Adobe Open Source CLA.
• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.