feat: Change Context configuration dynamically

[karelianpie]

Description

Add a config setter to be able to change configurations (chainId, context and assetServiceState) dynamically after initialisation. Usage:

// Initialise a Yearn instance
const sdkInstance = new Yearn(1, {
  provider,
  zapper: ZAPPER_API_KEY,
  // ...
});
// then we can dynamically change the config by
sdkInstance.config = {
  chainId: 250,
  context: {
    anotherProvider,
    zapper: 'anotherZapperKey',
    // ...
  },
};

Related Issue

N/A

Motivation and Context

Currently after initialisation it is not possible to change the configs in the context

How Has This Been Tested?

Ran locally with yalc

[github-actions[bot]]

size-limit report 📦

Path	Size
dist/sdk.cjs.production.min.js	47.67 KB (+0.38% 🔺)
dist/sdk.esm.js	48 KB (+0.37% 🔺)

[karelianpie]

@xgambitox shall we close this?

[karelianpie]

Closing for now as it's stalled, reopen if to be continued