#87 - implemented I18n localization for android and iOS

[akshaydoshi2]

/claim #87
I18n localization for android and iOS has been implemented.

For Android:

1. The key-value pairs for localizations can be found in res/values-<language_code>/strings.xml
2. The file res/values/strings.xml is the fallback file. If the user selects any language that is not implemented by us, the values from this file are used.
3. These strings can be used in the app using Resources.getSystem().getString(R.string.<name_property>). For eg: Resources.getSystem().getString(R.string.hello_world)
4. New languages can be added by simple creating new folder like in: res/values-<language_code>/strings.xml and inserting all the translated strings.

For iOS:

1. The key-value pairs for localizations can be found in Localizable in the left navigation pane.
2. Each language uses a separate file named as Localizable (language) in the left navigation pane.
3. The strings can be accessed by: NSLocalizedString(<key_name>, comment:""). For example: NSLocalizedString("hello_world", comment:"").
4. New languages can be added by doing the following in XCode: `Plugin (in the left navigation pane) -> Plugin (Project) -> Info -> Localizations -> Press (+) -> Select language

For both android and iOS, the keys of all the translated matching strings should match. Else the translations will not work.

[ologbonowiwi]

LGTM

[sonarcloud]

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[akshaydoshi2]

@riderx can you check this please?