Add Multipass Setup for user_events metrics testing on Ubuntu 24.04 VM

[lalitb]

Changes

Note: I found this setup helpful for testing my latest user_events metrics PR, so thought of adding it. Feel free to reject the PR if this doesn't seem helpful :)

Setting up the Linux kernel with user_events enabled can be challenging, especially since the latest WSL images do not yet support it. An easier alternative is to use an Ubuntu 24.04 (or greater) VM, which can be run on Hyper-V, VirtualBox, or other virtualization platforms.

This PR introduces a cloud-init.yaml configuration file for creating an Ubuntu VM using multipass, with user_events support and other required configurations for decoding proto packets. This setup is cross-platform, allowing developers to run it on Windows, macOS, or Linux, simplifying the environment setup process for consistent testing.

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.6%. Comparing base (5308844) to head (5e71802).
Report is 1 commits behind head on main.

Additional details and impacted files

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  Coverage   53.6%   53.6%           
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  Files         43      43           
  Lines       6166    6166           
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  Hits        3306    3306           
  Misses      2860    2860           

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[cijothomas]

Thanks for the extremely detailed steps!
Validated in Mac now. Will do in windows later.