added MessageKit

Podfile

@@ -1,4 +1,5 @@
 target 'deltachat-ios' do
   use_frameworks!
   pod 'openssl-ios-bitcode'
+  pod 'MessageKit'
 end

deltachat-ios.xcodeproj/project.pbxproj

@@ -540,9 +540,12 @@
 			files = (
 			);
 			inputPaths = (
+				"${SRCROOT}/Pods/Target Support Files/Pods-deltachat-ios/Pods-deltachat-ios-frameworks.sh",
+				"${BUILT_PRODUCTS_DIR}/MessageKit/MessageKit.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/MessageKit.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;