Refs #1591.
## Summary
Adds support for using image notification attachments in the content extension.
## Screenshots
<img width="350" src="https://user-images.githubusercontent.com/74188/115494743-18462900-a21b-11eb-83d5-3e6c112d99df.png">
## Any other notes
Dynamic actions require the 'DYNAMIC' category but our content extension causes attachments to not appear and we want every possible feature to work with just this category.
Adds new fastlane lanes:
- `fastlane lint` which checks the linters
- `fastlane autocorrect` which applies the linters which can autocorrect (Rubocop, SwiftFormat)
Adds a build step to the Codegen abstract target which runs SwiftFormat in lint mode, pointing out what it's going to change when run.
Applies SwiftFormat to nearly all code -- exempts a few externally-sourced files and generated code.
This is somewhat in prep of being able to make the project file generated, but also just organizes things into more concrete directory structures.
This pulls out _all_ of the build settings from the root level, and most from the target level, into xcconfigs.
The new directory structure looks like:
- Sources
- App
- (everything from HomeAssistant/)
- WatchApp
- Shared
- MacBridge
- Extensions
- Intents
- NotificationContent
- NotificationService
- Share
- Today
- Watch
- Widgets
- Tests
- App
- UI
- Shared
Somewhat intentionally, the file structure under these is not yet standardized/organized.
The project targets are now:
- App
- WatchApp
- Shared-iOS
- Shared-watchOS
- MacBridge
- Tests-App
- Tests-UI
- Tests-Shared
- Extension-Intents
- Extension-NotificationContent
- Extension-NotificationService
- Extension-Share
- Extension-Today
- Extension-Widget
- WatchExtension-Watch
This does not yet clean up resources vs. sources, nor does it handle some of the "it's in Sources/App but it's part of Shared" crossover directory issues.
