Enhancement: Add Currency Selection Feature

[RoyNkem]

Description:

Currently, the app displays currency values based on the device's locale. To improve user experience and provide more flexibility, I propose adding a currency selection feature to the Home view. This enhancement will allow users to choose their preferred currency for displaying portfolio values.

Expected Behavior:

When a user accesses the App, they should have the option to select their preferred currency from a list of available currencies. Once selected, the app should display all values in the chosen currency.

Steps to Reproduce:

1. Launch the app.
2. Look for the newly added "Currency Selection" button.
3. Tap the button to open a list of available currencies.
4. Choose a currency from the list.
5. Observe that the app now displays values in the selected currency.

Suggested Solution:

To implement this enhancement, create a user interface element (such as a button) in the Home view that triggers a currency selection popover or view. Allow users to choose their desired currency from a list of supported options. Once selected, update the displayed values accordingly.

Additional Notes:

This feature will provide users with greater control over how they view their portfolio values, catering to a diverse user base with varying currency preferences.