Create a default display layout for yamcs-quickstart users.

[akhenry]

• Example Flexible Layout display loads by default at application start.
• Illustrates multiple examples of Open MCT views including conditionals, conditional styling, Gauges, LAD Tables, Tab views and nested layouts.

Testing Notes

#478 (comment)

[akhenry]

In testing this I saw a large number of errors on first load. Because it is using webpack-dev-server these are being presented in a blocking overlay dialog

The JavaScript console showed a large number of errors similar to the one below:

TelemetryAPI.js:467 TypeError: Cannot read properties of undefined (reading 'timestamp')
    at TelemetryCriterion.js:159:46
    at Array.reduce (<anonymous>)
    at m_.createNormalizedDatum (TelemetryCriterion.js:157:53)
    at AllTelemetryCriterion.js:236:38
    at Array.forEach (<anonymous>)
    at AllTelemetryCriterion.js:232:32
    at async Promise.all (:9000/index 0)
    at async Promise.all (:9000/index 0)
    at async M_.requestLADConditionSetOutput (ConditionManager.js:348:27)
    at async g_.request (ConditionSetTelemetryProvider.js:46:5)

The browser showed the following runtime errors:

Note that I was running Yamcs Quickstart, but I was not running the simulator at the time, which may be relevant. It's possible that there was no telemetry in Yamcs. If that is indeed the issue, we should fail more gracefully/

[akhenry]

Confirmed, if I run the simulator I no longer see these errors. So we just need to fix the case where Yamcs has been started but the simulator has never been run, so there is no telemetry present.

[akhenry]

Otherwise the examples displays work great, nice work!