Simplify building middleware chain

[krototype]

Summary

Previously, if we needed to add a middleware to the middleware chain, we had to make a custom middleware chain and then add the middlewares accordingly.

Now, using getMiddlewareChain() and setMiddlewareChain() we can create the middleware in an easier way.

Sample Javascript Code:

// initialising client
const client = MicrosoftGraph.Client.init({
	defaultVersion: "v1.0",
	debugLogging: true,
	authProvider: (done) => {
		done(null, secrets.accessToken);
	},
});

// getting the current middleware chain (in this case, it's the default one)
let arr = client.getMiddlewareChain();
const dummyRandomHandler = new dummyRandomHandler();

// adding the dummy handler in the array of middlewares at 3rd position
arr.splice(2, 0, dummyRandomHandler);

// setting the new middleware chain
client.setMiddlewareChain(arr);

// calling the api
client
	.api("/me")
	.select("displayName")
	.get()
	.then((res) => {
		console.log(res);
	})
	.catch((err) => {
		console.log(err);
	});

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.