feat: add installSource property to VersionCheck; update App component to display installation source. Enhance native implementations for Android and iOS to support install source detection.

Author: AlshehriAli0

example/App.tsx

@@ -45,6 +45,7 @@ export default function App() {
       <Text style={styles.label}>Build: {VersionCheck.buildNumber}</Text>
       <Text style={styles.label}>Package: {VersionCheck.packageName}</Text>
       <Text style={styles.label}>Country: {VersionCheck.getCountry()}</Text>
+      <Text style={styles.label}>Install: {VersionCheck.installSource ?? "Dev Build"}</Text>
 
       <View style={styles.divider} />
 

package/android/src/main/java/com/margelo/nitro/nitroversioncheck/HybridVersionCheck.kt

@@ -22,6 +22,15 @@ class HybridVersionCheck : HybridVersionCheckSpec() {
     }
 
     public override val packageName = packageInfo?.packageName ?: "unknown"
+    public override val installSource: String? = run {
+        val installer = if (android.os.Build.VERSION.SDK_INT >= 30) {
+            context?.packageManager?.getInstallSourceInfo(context.packageName)?.installingPackageName
+        } else {
+            @Suppress("DEPRECATION")
+            context?.packageManager?.getInstallerPackageName(context.packageName)
+        }
+        if (installer != null) "playstore" else null
+    }
 
     override fun getCountry(): String {
         return java.util.Locale.getDefault().country ?: "unknown"

package/ios/HybridVersionCheck.swift

@@ -12,6 +12,16 @@ class HybridVersionCheck: HybridVersionCheckSpec {
     var version = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "unknown"
     var buildNumber = Bundle.main.infoDictionary?["CFBundleVersion"] as? String ?? "unknown"
     var packageName = Bundle.main.infoDictionary?["CFBundleIdentifier"] as? String ?? "unknown"
+    var installSource: String? = {
+        guard let receiptURL = Bundle.main.appStoreReceiptURL,
+              FileManager.default.fileExists(atPath: receiptURL.path) else {
+            return nil
+        }
+        if receiptURL.lastPathComponent == "sandboxReceipt" {
+            return "testflight"
+        }
+        return "appstore"
+    }()
 
     func getCountry() throws -> String {
         if #available(iOS 16, *) {