Rebrand from MyCrib to Casera

- Rename Kotlin package from com.example.mycrib to com.example.casera
- Update Android app name, namespace, and application ID
- Update iOS bundle identifiers and project settings
- Rename iOS directories (MyCribTests -> CaseraTests, etc.)
- Update deep link schemes from mycrib:// to casera://
- Update app group identifiers
- Update subscription product IDs
- Update all UI strings and branding

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

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

composeApp/src/jsMain/kotlin/com/example/casera/Platform.js.kt

@@ -1,4 +1,4 @@
-package com.example.mycrib
+package com.example.casera
 
 class JsPlatform: Platform {
     override val name: String = "Web with Kotlin/JS"

composeApp/src/jsMain/kotlin/com/example/casera/network/ApiClient.js.kt

@@ -1,4 +1,4 @@
-package com.mycrib.shared.network
+package com.casera.shared.network
 
 import io.ktor.client.*
 import io.ktor.client.engine.js.*

composeApp/src/jsMain/kotlin/com/example/casera/platform/ImagePicker.js.kt

@@ -1,4 +1,4 @@
-package com.mycrib.platform
+package com.casera.platform
 
 import androidx.compose.runtime.Composable