CmdPal: Aggregate net adapter stats and default adapter selection

[jiripolasek]

Summary of the Pull Request

This PR introduces a new virtual network adapter in performance monitor that sums up data from all physical adapters. That way users will see any network usage, and for most of them it might be good enough. For the rest, this PR adds a new command to set any network adapter as a default.

• Switches from Performance Counters to raw GetIfTable2.
• Adds a new virtual network adapter "All" and uses it as a default.
• Adds a new command to set an actual default network adapter for the perfmon.

PR Checklist

• Closes: #xxx

• Communication: I've discussed this with core contributors already. If the work hasn't been agreed, this work might be rejected
• Tests: Added/updated and all pass
• Localization: All end-user-facing strings can be localized
• Dev docs: Added/updated
• New binaries: Added on the required places
  • JSON for signing for new binaries
  • WXS for installer for new binaries and localization folder
  • YML for CI pipeline for new test projects
  • YML for signed pipeline
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed