Created Microchip_MPLAB_X_IDE.gitignore file.

[justinlanejigglesoft]

Reasons for making this change

I required a .gitignore file for the MPLAB X IDE (https://www.microchip.com/en-us/tools-resources/develop/mplab-x-ide) and there wasn't one in this repo. Google search found many people asking for one and then having to make their own.

Links to documentation supporting these rule changes

https://developerhelp.microchip.com/xwiki/bin/view/software-tools/ides/x/version-control/working-with-version-control/ I created the .gitignore file whilst working with the MPLAB X IDE given the guidelines above.

If this is a new template

The repository that is using this latest version is not yet public.

Merge and Approval Steps

• [ X] Confirm that you've read the contribution guidelines and ensured your PR aligns
• [NO CI YET - LOCAL BUILDS. DID CHECKOUT FROM SCRATCH AND BUILDS] Ensure CI is passing
• [ HOW?] Get a review and Approval from one of the maintainers