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.