Add share sales proposal template

[estebangallego]

Issue & Reproduction Steps

Expanding the array of default templates with a new option: Sales Share Proposal

Solution

• Added a new default template. (Sales Share Proposal)

How to Test

• run php artisan migrate
• Click on Designer
• Click on + Process
• Click on Sales Share Proposal

Related Tickets & Packages.

• Ticket FOUR-7947

Code Review Checklist

• [ ] I have pulled this code locally and tested it on my instance, along with any associated packages.
• [ ] This code adheres to ProcessMaker Coding Guidelines.
• [ ] This code includes a unit test or an E2E test that tests its functionality or is covered by an existing test.
• [ ] This solution fixes the bug reported in the original ticket.
• [ ] This solution does not alter the expected output of a component in a way that would break existing Processes.
• [ ] This solution does not implement any breaking changes that would invalidate documentation or cause existing Processes to fail.
• [ ] This solution has been tested with enterprise packages that rely on its functionality and does not introduce bugs in those packages.
• [ ] This code does not duplicate functionality that already exists in the framework or in ProcessMaker.
• [ ] This ticket conforms to the PRD associated with this part of ProcessMaker.