Change the Spezi icon in Onboarding to a star (#3)

# Change the Spezi icon in Onboarding to a star

## ♻️ Current situation & Problem
The current Spezi icon is an iPhone which is boring.


## ⚙️ Release Notes 
This PR changes the icon to a star, which is much cooler looking. It
also serves as a great demo for how to resolve a merge conflict in
class.


## 📚 Documentation
- N/A


## ✅ Testing
- N/A


## 📝 Code of Conduct & Contributing Guidelines 

By submitting creating this pull request, you agree to follow our [Code
of
Conduct](https://github.com/CS342/.github/blob/main/CODE_OF_CONDUCT.md)
and [Contributing
Guidelines](https://github.com/CS342/.github/blob/main/CONTRIBUTING.md):
- [X] I agree to follow the [Code of
Conduct](https://github.com/CS342/.github/blob/main/CODE_OF_CONDUCT.md)
and [Contributing
Guidelines](https://github.com/CS342/.github/blob/main/CONTRIBUTING.md).

Author: vishnuravi

CS342ExampleApplication.xcodeproj/xcshareddata/xcschemes/CS342ExampleApplication.xcscheme

@@ -79,7 +79,7 @@
       <CommandLineArguments>
          <CommandLineArgument
             argument = "--disableFirebase"
-            isEnabled = "YES">
+            isEnabled = "NO">
          </CommandLineArgument>
          <CommandLineArgument
             argument = "--showOnboarding"
@@ -95,7 +95,7 @@
          </CommandLineArgument>
          <CommandLineArgument
             argument = "--useFirebaseEmulator"
-            isEnabled = "NO">
+            isEnabled = "YES">
          </CommandLineArgument>
       </CommandLineArguments>
       <EnvironmentVariables>

CS342ExampleApplication/Onboarding/Welcome.swift

@@ -21,7 +21,7 @@ struct Welcome: View {
             areas: [
                 OnboardingInformationView.Content(
                     icon: {
-                        Image(systemName: "cat.fill")
+                        Image(systemName: "staroflife.fill")
                             .accessibilityHidden(true)
                     },
                     title: "Cats are great!",