Todo: Chaincode Application Gateway UI

[dodo920306]

Integration with the Application Gateway is added in #735. Now the only thing left to do is to implement the UI to interact with it.

[Karman580]

/assign

[KHARSHAVARDHAN-eng]

Hi! I'd like to work on this issue if it's still available.

I'm currently setting up the project locally and reviewing the existing Application Gateway implementation (#735). I'll share a pull request once I have a working solution.

Thanks!