Option to change currency in App

[sanjeevyadavIT]

Is your feature request related to a problem? Please describe. Allow app to change currency, which will update the currency symbol and currency rate.

Describe the solution you'd like

• [x] Show drop down to select currency
• [x] Update currency symbol and price rate according in entire app
• [x] When placing order, make sure to send currency type in order
• [x] In Oder detail, show currency from the API and not currently selected one.

Additional context magento 2 Admin setting to add currency - video