Internationalization & localization (#1822)

* install and setup lingui

* setup dynamic locale activation and async loading

* first pass of automated replacement of text messages

* add some more documentaton

* fix nits

* add `es` and `hi`locales for testing purposes

* make accessibilityLabel localized

* compile and extract new messages

* fix merge conflicts

* fix eslint warning

* change instructions from sending email to opening PR

* fix comments

babel.config.js

@@ -45,6 +45,7 @@ module.exports = function (api) {
           },
         },
       ],
+      'macros',
       'react-native-reanimated/plugin', // NOTE: this plugin MUST be last
     ],
     env: {