Electron renderer diagnostics workflow

We need a way to see assess performance and improve resource intensive components / tasks.

There should be an electron lib that does this somewhere.

The outcome of this would be to measure a baseline metric that is "good performance" and then rank various components and features that significantly over that metric.

Start by locating the Electron renderer entry points and checking whether an Electron diagnostics library is already present. Define how resource-intensive components and tasks will be measured, establish the baseline for good performance, and specify how results should rank components that exceed it.

Written by the indexing model from the issue text.