[Proposal] Performance triage improvements

[kotlarmilos]

Description

Here are some ideas that we collected during this release cycle. Let's first discuss them and then work on implementation plan:

• Sort regressions in autofilling issues based on performance difference and count
• Update autofilling WASM size-related regressions to present overall size difference
• Update the existing "per-preview" dashboard to comparing two commits
• Report/link the same regressions in different configurations
• Performance triage by bisecting the range #2916
• Introduce microbenchmarks for mobile platforms (Apple/Android)
• Enable iOS MAUI size measurements
• Present CoreCLR and Mono performance together to identify missing optimizations and implementation gaps

Feel free to update this list with more ideas.