ia32: add passing of graphmode params via syspage and platformctl

[adamgreloch]

plo can now store graphics mode details in syspage (i.e. after setting the mode via VESA VBE) that are then accessible from userspace via platformctl

JIRA: RTOS-906

Description

Motivation and Context

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)
• Chore (refactoring, style fixes, git/CI config, submodule management, no code logic changes)

How Has This Been Tested?

• Already covered by automatic testing.
• New test added: (add PR link here).
• Tested by hand on: ia32

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing linter checks and tests passed.
• My changes generate no new compilation warnings for any of the targets.

Special treatment

• This PR needs additional PRs to work (list the PRs, preferably in merge-order).
• I will merge this PR by myself when appropriate.

[github-actions]

Unit Test Results

7 725 tests  ±0   7 010 ✅ ±0   37m 23s ⏱️ -1s
  445 suites ±0     715 💤 ±0 
    1 files   ±0       0 ❌ ±0 

Results for commit 44fda1e. ± Comparison against base commit a10f91b.

♻️ This comment has been updated with latest results.

[agkaminski]

One nitpick, otherwise LGTM. I was wondering if we really need to pass this information from plo to user via kernel (as kernel does not seem to make any use of it), but I came to the conclusion that it is indeed justified.