[MOBILEAPPS-1654] Open in App pop-up implementation in android and iphone (#2889)

* Open in App pop up implementation

* review comments addressed

* unit test cases added for open-in-app component and aca-mobile-app-switcher-service and review comments addressed

* cspell changes

* test case build failing issue resolved

* review comments addressed of using specific type and void in functions that do not return anything

* remaining review comments fixed for type cases

* added check for ipad and ipod

* checkForIOSDevice function removed and checked for ios device in same line

* spacing issues addressed

* missing unit tests added and some review comments addressed

* app.config.json file updated

* removed configuration variables from default Readme file

* used only boolean instead of string conversion in app service file

* session storage name change

* review comments addressed

projects/aca-content/assets/i18n/en.json

@@ -269,6 +269,9 @@
                 "MESSAGE": "Leaving will remove your access.",
                 "YES_LABEL": "OK",
                 "NO_LABEL": "Cancel"
+            },
+            "MOBILE_APP": {
+              "MOBILE_APP_BUTTON_LABEL": "Open in App"
             }
         },
         "DOCUMENT_LIST": {