Object-oriented Spell API

[PandaWhisperer]

I find the current Spell API a little bit awkward and I would prefer a more object-oriented interface. As JavaScript is an object-oriented language, I think that would feel more "natural".

I'm thinking something like this:

spell = new dsa.Spell();       // create spell
spell.add({ ... });            // add connectors
await spell.estimateCastGas(); // estimate gas
await spell.cast();            // cast spell

What do you think?

It seems that it would be possible to offer this API without breaking backwards compatibility, simply by extracting the ad-hoc spell class from src/index.js into a standalone class and binding the existing methods to it.

I can try working this out and submit a PR if interested.

[Sowmayjain]

Thank you. Its implemented on our new SDK: https://github.com/instadapp/dsa-connect