project: add Reusable framework

this framework will be used to:
- instantiate in a more "type safety" way UI components
- to split storyboards into atomic VCs

Change-Id: I1fec0a87a9e2c4b838174139ce57f9097bb4d4c7
diff --git a/Ring/Cartfile.resolved b/Ring/Cartfile.resolved
index 2cc313e..e2c6be1 100644
--- a/Ring/Cartfile.resolved
+++ b/Ring/Cartfile.resolved
@@ -1,3 +1,4 @@
+github "AliSoftware/Reusable" "4.0.1"
 github "ReactiveX/RxSwift" "3.5.0"
 github "RxSwiftCommunity/RxDataSources" "1.0.4"
 github "RxSwiftCommunity/RxRealm" "0.6.0"