chore: add Facebook Auth example

[grdsdev]

What kind of change does this PR introduce?

Add a new example on how to integrate Facebook SDK with the signInWithIdToken method.

[Copilot]

Pull Request Overview

Adds a Facebook authentication example to the Supabase Swift SDK examples, including package dependency, example view, app delegate setup, and documentation.

• Introduce facebook-ios-sdk in the Swift package resolution.
• Create SignInWithFacebook view and wire it into the app lifecycle and AuthView.
• Update Info.plist and README with Facebook App ID, client token, and URL scheme placeholders.

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Supabase.xcworkspace/xcshareddata/swiftpm/Package.resolved	Added facebook-ios-sdk dependency
Examples/README.md	Documented Facebook Sign-In setup
Examples/Examples/Info.plist	Added FacebookAppID, FacebookClientToken, URL schemes
Examples/Examples/ExamplesApp.swift	Configured AppDelegate and SceneDelegate for Facebook Login
Examples/Examples/Auth/SignInWithFacebook.swift	New SwiftUI view for Facebook sign-in example
Examples/Examples/Auth/AuthView.swift	Integrated Facebook option into AuthView
Examples/Examples.xcodeproj/project.pbxproj	Registered new source file and Swift package products

Comments suppressed due to low confidence (4)

Examples/Examples/Info.plist:20

• [nitpick] Placeholder formatting includes spaces inside braces. Use a consistent placeholder name without spaces, e.g. {{DOT_REVERSED_IOS_CLIENT_ID}}, to avoid substitution errors.

<string>{{ DOT_REVERSED_IOS_CLIENT_ID }}</string>

Examples/Examples/Info.plist:26

• Placeholder includes spaces and unusual naming. Consider using fb{{FACEBOOK_APP_ID}} to match typical placeholder conventions and ensure a valid URL scheme.

<string>fb{{ FACEBOOK APP ID }}</string>

Examples/README.md:13

• Add a step to resolve Swift Package dependencies (e.g., via Xcode’s Swift Packages menu or swift package update) so the Facebook SDK is fetched before building.

3. Build and run the project (⌘R)

Examples/Examples/ExamplesApp.swift:19

• Missing return statement in application(_:didFinishLaunchingWithOptions:). The method must return a Bool; either return the result of ApplicationDelegate.shared.application(...) or explicitly return true.

ApplicationDelegate.shared.application(

[coveralls]

Pull Request Test Coverage Report for Build 15531908710

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall first build on guilherme/example-facebook at 75.652%

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Totals
Change from base Build 15390678797:	75.7%
Covered Lines:	5223
Relevant Lines:	6904

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💛 - Coveralls