feat(ios): migrate to Swift Package Manager and upgrade linphone-sdk

example/ios/Podfile.lock

@@ -1,36 +1,16 @@
 PODS:
   - Flutter (1.0.0)
-  - integration_test (0.0.1):
-    - Flutter
-  - liblinphone_flutter (0.0.3):
-    - Flutter
-    - linphone-sdk (~> 5.4.84)
-  - linphone-sdk (5.4.84)
 
 DEPENDENCIES:
   - Flutter (from `Flutter`)
-  - integration_test (from `.symlinks/plugins/integration_test/ios`)
-  - liblinphone_flutter (from `.symlinks/plugins/liblinphone_flutter/ios`)
-  - linphone-sdk (~> 5.4.84)
-
-SPEC REPOS:
-  https://gitlab.linphone.org/BC/public/podspec.git:
-    - linphone-sdk
 
 EXTERNAL SOURCES:
   Flutter:
     :path: Flutter
-  integration_test:
-    :path: ".symlinks/plugins/integration_test/ios"
-  liblinphone_flutter:
-    :path: ".symlinks/plugins/liblinphone_flutter/ios"
 
 SPEC CHECKSUMS:
   Flutter: cabc95a1d2626b1b06e7179b784ebcf0c0cde467
-  integration_test: 252f60fa39af5e17c3aa9899d35d908a0721b573
-  liblinphone_flutter: d9f5b41ba24ac8c6ff5916bc3043fa9dc75b3128
-  linphone-sdk: 4df925a4973fdef74a58ce58f6c79e6cff3fa743
 
-PODFILE CHECKSUM: ed544b1f5ae46acc02aae47e34573c3ba1f21c68
+PODFILE CHECKSUM: 10f69310bf9f4be8c7fbe5151f573998954434f1
 
 COCOAPODS: 1.16.2