[Feature] Build Swap functionality into Exchange page

[nickcaputo]

We are building the Exchange swap page, and have to implement the swap function within the page

This ticket is to implement said swap, but NOT the display of it. ONLY create the functionality to provide X ERC-20 coin from wallet, and receive Y ERC-20 token into that same wallet.

[xivanc]

update: we are going to use https://0x.org/api for this functionality

[xivanc]

simple step by step guide for a swap: https://0x.org/docs/guides/swap-tokens-with-0x-api

[xivanc]

this component:

[xivanc]

UI component will be done in this ticket #21