Resolve "Feature: Add Participation Price / Fee"

Description of the change

• It adds a "Pricing" section to the Event EditView.
• It adds the possibility to add and display a participationPrice for an event.
• It renames showParticipationPrice to showParticipationFee for streamlined terminology.
• It adds respective translations for ar, en_US, de, fr_FR, zh_Hans, zh_Hant
• It adds a migration to update the event options field of existing event.

Screenshots

Applicable issue numbers

Closes #1494

Alternate designs/implementations

Considered but not implemented: An integrated payment processing feature to handle transactions directly within Mobilizon. This was deferred to focus on basic fee display functionality first.

Benefits of this implementation

• Consistency: Ensures the participation fee is displayed in a style consistent with other event options.
• Transparency: Helps organizers clearly communicate event costs to potential attendees.

Possible drawbacks

• Limited Functionality: Only adds the ability to display a participation fee, without handling payment transactions.
• Manual Management: Event organizers must manually manage payment collection and tracking, as this feature does not include automated payment processing.

Why should this be part of a core component?

• Existing Framework: Builds on the existing core functionality initiated by showParticipationPrice, enhancing it with more explicit fee management.
• User Demand: Addresses a critical need for event organizers to communicate event costs. This might be essential for many users and use cases within Mobilizon.
• Foundation for Future Enhancements: Provides a groundwork for potential future development, such as integrating payment gateways or more advanced financial management features.

Testing process

1. Create or Edit an Event:

• Navigate to the event creation or editing interface.
• Locate the new "Pricing" section.
• Activate switch showParticipationFee
• Enter a value for participationFee.

2. Verify Display:

• Save the event and view it as a participant would.
• Ensure the participation fee is displayed correctly in the event details.

3. Check Various Views:

• Test the display of the participation fee across different views (e.g., desktop, mobile).
• Verify the fee visibility in different components where event details are shown.