Telemetry for multi-window

[jvonitter]

• How many too-many-window dialogs happen / what percentage
• Long press discovery
• +tray button use
• How long is a window open for / window life
• Frequency of window moves
• Frequency of window resizes (and most common size if we can)
• Curved windows setting - how many users use it / what percentage
• When a session is multi-window, what percentage of time is each position the active window
• Average of how many windows are open at a time, per session

Needed by #1319

[thenadj]

@jvonitter Can we add three more?

• What position is most often used for active window (left, middle, right)
• Resizing: What window sizes are used? How often?
• How many windows are open at a time?

[jvonitter]

@thenadj Yeah, we can add those. I'll update the ticket above

[keianhzo]

@jvonitter do we have a final list of events that we want to add to multiwindow?

[jvonitter]

updated the description to be a bit clearer

[jvonitter]

I've reached out to the data steward for ET to review this data collection. Stay tuned!

[keianhzo]

Closed by #1467