Add pull request template and workflow for backend-printing

[devanshjainms]

Purpose

• Add pull request template and workflow for backend-printing

Does this introduce a breaking change?

[ ] Yes
[x ] No

Pull Request Type

What kind of change does this Pull Request introduce?
Add code hygiene and repo best practices.

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[x] Documentation content changes
[ ] Other... Please describe:

How to Test

• Test the code

Not required

What to Check

Verify that the following are valid

• none

Other Information