drm: add PrepareDrmObjectProperties trait

[mahkoh]

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[Copilot]

Pull request overview

This PR introduces a reusable mechanism for tracking, updating, diffing, and emitting DRM object property changes (with optional logging), and refactors the Metal DRM backend to use it, reducing bespoke per-object property handling.

Changes:

• Add DrmPropertyValue<T>, PrepareDrmObjectProperties / PrepareDrmObjectProperty, and logging helpers for preparing atomic DRM property changes.
• Refactor Metal DRM state structs to store property IDs + typed values in *StateProps and generate updates/changes via #[derive(PrepareDrmObjectProperties)].
• Relax Reset to no longer require Default, and update BoxCache bounds accordingly.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/video/drm.rs	Adds generic property/value wrapper, property-prep traits, logging support, and extends DRM object/value conversion helpers.
src/utils/reset.rs	Changes Reset trait semantics (drops Default supertrait) and expands numeric impls via macro.
src/utils/box_cache.rs	Updates BoxReset cache usage to require Default explicitly where construction is needed.
src/backends/metal/video.rs	Refactors property collection/storage to use DrmPropertyValue and new *StateProps structs.
src/backends/metal/transaction.rs	Refactors transaction diff/prepare logic to use PrepareDrmObjectProperties derive and reset() instead of Default.
src/backends/metal/present.rs	Updates runtime plane-property mutation to use DrmPropertyValue { id, value } layout.
jay-proc/src/lib.rs	Exposes the new #[derive(PrepareDrmObjectProperties)] proc-macro.
jay-proc/src/drm_object_properties.rs	Implements proc-macro that generates property update/diff/prepare + a specialized reset for property-holder structs.
algorithms/src/triangles.rs	Adds a targeted Clippy suppression for a small loop.

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