Move experimental/examples to examples (#2976)

* Move experimental/examples to examples

* Change version to 1.4.0-rc01

examples/codeviewer/.gitignore

@@ -2,14 +2,14 @@
 .gradle
 /local.properties
 /.idea
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
 .DS_Store
 build/
 /captures
 .externalNativeBuild
-.cxx
+.cxx
+iosApp/Podfile.lock
+iosApp/Pods/*
+iosApp/iosApp.xcworkspace/*
+iosApp/iosApp.xcodeproj/*
+!iosApp/iosApp.xcodeproj/project.pbxproj
+shared/shared.podspec