Show transaction fee in dollar equivalent on the portal UI

[prayagd]

Context

Currently the transaction fees displayed on the Portal UI is in PEN and with lot of additional zeroes, based on the feedback this should be changed to dollar equivalent of the PEN amount displayed

Requirement

• Change the transaction fee on the Bridge UI to dollar equivalent
• If the conversion to PEN amount to $ is higher than $0.01 show the dollar amount, if the conversion is less than $0.01 then show "<$0.01"
• This should be changed on both the staking modals and the bridge UI for both issue and redeem
• Applicable for both Pendulum and Amplitude

Notes

• For reference see Transaction fee in the below screenshot
  

[prayagd]

Hey team! Please add your planning poker estimate with Zenhub @ebma @Sharqiewicz

[vadaynujra]

@prayagd @annatekl do we only want to show the dollar amount, or show the dollar amount in addition to the actual PEN amount?

[prayagd]

This ticket was created based on the feedback that the dollar amount is more significant, but if we have more findings from the user interview from @annatekl. The changes can be made, i am flexible that way.

IMO as a user the dollar amount should suffice for me, seeing at uniswap for reference