Adam Bobowski

[App] Application logs in CLI

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## What does this PR do? This PR adds CLI command `lightning show logs []` that prints logs ### Does your PR introduce any breaking changes? If yes, please list...

[App] Moved app.py to root dir for `lightning init app <app_name>` template

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## What does this PR do? Currently when You init a new app using `lightning init app ` the `app.py` is in the module directory which impacts running app with...

## What does this PR do? We add a new `LightningPlatformException` as to indicate possible error events happening on the platform the Lightning App is on. We currently consider (but...