Support `{ios,macos,tvos,watchos}_application`

[brentleyjones]

• [x] ios_application
• [x] macos_application
• [x] tvos_application
• [x] watchos_application

For each:

• Check if it's already supported, and if not, make required changes
• Add an example
• Add a fixture test

For watchos_application:

• [x] Also support "WatchApp for iOS App" with "Embed Watch Content" PBXCopyFilesBuildPhase : #718

Non-minimal fields that need support:

• [x] Fully support app_icons: #730
• [x] Support alternate_icons: #1125
• [x] Support codesignopts: #593
• [x] Support entitlements: #367
• [x] Support executable_name: #721
• [x] Support infoplists: #225
• [x] Support launch_images: #713
• [x] Support launch_storyboard: #712
• [x] Support provisioning_profile
• [ ] Support settings_bundle
• [ ] Support strings

[maxwellE]

@brentleyjones For the "Non-minimal fields that need support", are we saying that those are not supported at all right now?

[brentleyjones]

They might be supported, but we don't have examples of them if they aren't, so we can't check them off yet.

[maxwellE]

Ill start on alternate_icons today

[brentleyjones]

settings_bundle needs some special AppleResourceInfo handling. It should work for BwB though as is.

[brentleyjones]

Closed as complete because the only remaining thing has it's own issue, and it's BwX only.