Add entry to print amount to distribute

[Psiquee]

Description

• Add entry to print amount to distribute, printing is done correctly.
• Add the corresponding responsive design to the input with its button.
• The smart contract is made by distributing the printed amount
• this closes feat: the distributor user should be able to add the tokens ammounts to all the recipients #4

Details to keep in mind

• When entering the value manually from the keyboard, the integer is written but with a 0 on the left. This does not modify the printout but it is an error. Example: written number 012 prints 12

Issues

• There is an error when deleting the first input, since its value is not modified from the total.