feat: implements dns example with full inkathon template

[peetzweg]

This PR is part is meant to be compared with #56 .

Adds frontend example with full on inkathon.xyz template code. It adds a lot of features and boilerplate code for a more production ready app. Stuff which also might make it hard to actually understand the relevant js code for interacting with the smart contract.

Here is my personal pro/con list of creating examples for this repo with inkathon.xyz

Pro:

• production ready
• better wallet connectivity
• multichain deploys/interaction
• toast system / ui components
• scripts for contract deployment and compiling

Con:

• hard to maintain as template will evolve over time
• obfuscates the minimal contract interaction code in all full-stack dapp boilerplate

I don't care to much about the pros, as these are in my opinion not relevant for a timeless, low maintance example. Afaik these examples are not meant to be showcase level dapps.

In this demo video I'm not using all features inkathon offers, like the toast system or more elaborate styles. I plainly copied the code over from the comparison useinkathon pr to showcase boilerplate overhead.

inkathon-small.mov

Dependencies

The list of dependencies is long as inkathon comes with a lot of choices already made for you. I don't use too many features of these yet. It's for form handling, input validation, toasts, ui components, analytics, full-stack web framework next, loading spinners and more.

https://github.com/paritytech/ink-examples/blob/a575d4f66f9232a70413825a4260d4670eb74917/dns/example/frontend/package.json#L18-L55

[peetzweg]

Closed in favor of #56.