feat: add create_recovery_file decrypt_recovery_file

Adds create_recovery_file & decrypt_recovery_file functions.
Adds examples for create_recovery_file & decrypt_recovery_file.
Updates README.md.
Updates version to 0.8.0.

example/ios/Podfile.lock

@@ -1237,7 +1237,7 @@ PODS:
     - ReactCommon/turbomodule/bridging
     - ReactCommon/turbomodule/core
     - Yoga
-  - react-native-pubky (0.7.1):
+  - react-native-pubky (0.8.0):
     - DoubleConversion
     - glog
     - hermes-engine
@@ -1757,7 +1757,7 @@ SPEC CHECKSUMS:
   React-logger: 4072f39df335ca443932e0ccece41fbeb5ca8404
   React-Mapbuffer: 714f2fae68edcabfc332b754e9fbaa8cfc68fdd4
   React-microtasksnativemodule: 4943ad8f99be8ccf5a63329fa7d269816609df9e
-  react-native-pubky: 1740252f1e510886c4239242d0b731bc4d96b91b
+  react-native-pubky: 1da8f3324a665ecf4495652efe0e67820a22f3a2
   React-nativeconfig: 4a9543185905fe41014c06776bf126083795aed9
   React-NativeModulesApple: 0506da59fc40d2e1e6e12a233db5e81c46face27
   React-perflogger: 3bbb82f18e9ac29a1a6931568e99d6305ef4403b

example/src/App.tsx

@@ -14,6 +14,8 @@ import {
   list,
   generateSecretKey,
   getPublicKeyFromSecretKey,
+  decryptRecoveryFile,
+  createRecoveryFile,
 } from '@synonymdev/react-native-pubky';
 
 const HOMESERVER = '8pinxxgqs41n4aididenw5apqp1urfmzdztr8jt4abrkdn435ewo';
@@ -268,6 +270,44 @@ export default function App() {
           }
         }}
       />
+
+      <Button
+        title={'Create Recovery File'}
+        onPress={async (): Promise<void> => {
+          try {
+            const res = await createRecoveryFile(
+              SECRET_KEY, // Secret Key
+              'passphrase' // Passphrase
+            );
+            if (res.isErr()) {
+              console.log(res.error.message);
+              return;
+            }
+            console.log(res.value);
+          } catch (e) {
+            console.log(e);
+          }
+        }}
+      />
+
+      <Button
+        title={'Decrypt Recovery File'}
+        onPress={async (): Promise<void> => {
+          try {
+            const res = await decryptRecoveryFile(
+              'cHVia3kub3JnL3JlY292ZXJ5CkZRt1NHIjxyTo0whSSgTgNrH56MPpGrSxvAQSE0x5FeklVJpNJqcNP4zjdwW/OpdBOsEC1qZ5MI/mcEUKFKVAEZwikdclsLZg==', // Recovery File (base64 encoded)
+              'passphrase' // Passphrase
+            );
+            if (res.isErr()) {
+              console.log(res.error.message);
+              return;
+            }
+            console.log(res.value);
+          } catch (e) {
+            console.log(e);
+          }
+        }}
+      />
     </View>
   );
 }