feat(preferences): Support for iOS suites

preferences/ios/Sources/PreferencesPlugin/Preferences.swift

@@ -5,21 +5,37 @@ public struct PreferencesConfiguration {
         case named(String), cordovaNativeStorage
     }
 
+    let suite: String
     let group: Group
 
-    public init(for group: Group = .named("CapacitorStorage")) {
-        self.group = group
+    public init(for suite: String = "", for group: Group = .named("CapacitorStorage")) {
+        self.suite = suite
+        if !suite.isEmpty {
+            self.group = .cordovaNativeStorage;
+        } else {
+            self.group = group
+        }
     }
 }
 
 public class Preferences {
     private let configuration: PreferencesConfiguration
 
     private var defaults: UserDefaults {
+        if !configuration.suite.isEmpty {
+            if let i = UserDefaults.init(suiteName: configuration.suite) {
+                return i
+            }
+        }
+
         return UserDefaults.standard
     }
 
     private var prefix: String {
+        if !configuration.suite.isEmpty {
+            return ""
+        }
+
         switch configuration.group {
         case .cordovaNativeStorage:
             return ""

preferences/ios/Sources/PreferencesPlugin/PreferencesPlugin.swift

@@ -19,16 +19,21 @@ public class PreferencesPlugin: CAPPlugin, CAPBridgedPlugin {
 
     @objc func configure(_ call: CAPPluginCall) {
         let group = call.getString("group")
+        let suite = call.getString("suite")
         let configuration: PreferencesConfiguration
 
-        if let group = group {
-            if group == "NativeStorage" {
-                configuration = PreferencesConfiguration(for: .cordovaNativeStorage)
+        if group == nil, let suite = suite {
+            configuration = PreferencesConfiguration(for: suite)
+        } else {
+            if let group = group, let suite = suite {
+                if group == "NativeStorage" {
+                    configuration = PreferencesConfiguration(for: suite, for: .cordovaNativeStorage)
+                } else {
+                    configuration = PreferencesConfiguration(for: suite, for: .named(group))
+                }
             } else {
-                configuration = PreferencesConfiguration(for: .named(group))
+                configuration = PreferencesConfiguration()
             }
-        } else {
-            configuration = PreferencesConfiguration()
         }
 
         preferences = Preferences(with: configuration)

preferences/src/definitions.ts

@@ -1,4 +1,13 @@
 export interface ConfigureOptions {
+  /**
+   * Set the suite name.
+   *
+   * If a suite is set, the group is automatically set to NativeStorage.
+   *
+   * @default ""
+   */
+  suite?: string;
+
   /**
    * Set the preferences group.
    *