Fix build issues after Casera rebranding

- Update google-services.json package name to com.example.casera
- Fix Xcode project paths from MyCrib/ to Casera/
- Update app display name and usage descriptions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

iosApp/iosApp.xcodeproj/xcshareddata/xcschemes/CaseraExtension.xcscheme

@@ -31,7 +31,7 @@
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "D4ADB376A7A4CFB73469E173"
-               BuildableName = "Casera.app"
+               BuildableName = "MyCrib.app"
                BlueprintName = "iosApp"
                ReferencedContainer = "container:iosApp.xcodeproj">
             </BuildableReference>
@@ -75,7 +75,7 @@
          <BuildableReference
             BuildableIdentifier = "primary"
             BlueprintIdentifier = "D4ADB376A7A4CFB73469E173"
-            BuildableName = "Casera.app"
+            BuildableName = "MyCrib.app"
             BlueprintName = "iosApp"
             ReferencedContainer = "container:iosApp.xcodeproj">
          </BuildableReference>
@@ -111,7 +111,7 @@
          <BuildableReference
             BuildableIdentifier = "primary"
             BlueprintIdentifier = "D4ADB376A7A4CFB73469E173"
-            BuildableName = "Casera.app"
+            BuildableName = "MyCrib.app"
             BlueprintName = "iosApp"
             ReferencedContainer = "container:iosApp.xcodeproj">
          </BuildableReference>