Add the Multi Asset Wallet ZelCore to the Ecosystem page

[TheEnthusiasticAs]

Multi Asset Wallet ZelCore
https://zel.network/

It has a cool UI

[milesmanley]

Thanks @TheEnthusiasticAs - I'll get a PR raised for this 😅

[milesmanley]

Hopefully it gets approved - really nice site btw guys

[gitr0n1n]

Addressed in issue 328

#328

Closing for housekeeping.