Token-specific egress fee details

[stephenpdeos]

As a user, I want to be informed about token-specific egress fees and minimum transfer amounts, so that I can make informed decisions and avoid unexpected charges or limitations

Acceptance Criteria

• The bridge frontend should display clear fee summaries for different tokens following coin-centric models defined.
• There should be a mechanism to prevent transactions below the minimum transfer amount, and users should receive notifications about this limitation.