Apply EFI_MEMORY_RP on Free Memory

[TaylorBeebe]

Description

This PR makes the necessary changes to apply EFI_MEMORY_RP on EfiConventionalMemory and adds a memory protection policy to configure the setting.

• [x] Impacts functionality?
  • Functionality - Does the change ultimately impact how firmware functions?
  • Examples: Add a new library, publish a new PPI, update an algorithm, ...
• [x] Impacts security?
  • Security - Does the change have a direct security impact on an application, flow, or firmware?
  • Examples: Crypto algorithm change, buffer overflow fix, parameter validation improvement, ...
• [x] Breaking change?
  • Breaking change - Will anyone consuming this change experience a break in build or boot behavior?
  • Examples: Add a new library class, move a module to a different repo, call a function in a new library class in a pre-existing module, ...
• [ ] Includes tests?
  • Tests - Does the change include any explicit test code?
  • Examples: Unit tests, integration tests, robot tests, ...
• [ ] Includes documentation?
  • Documentation - Does the change contain explicit documentation additions outside direct code modifications (and comments)?
  • Examples: Update readme file, add feature readme file, link to documentation on an a separate Web page, ...

How This Was Tested

Tested by running the DXE Paging Audit on Q35 and SBSA with various memory protection profiles.

Integration Instructions

Platforms which use pre-built binaries of Mu repos will need to rebuild them to sync the memory protection policy between all modules.