Implemented Event Grid Client & Publish Events

[Alexei-B]

Implementation for #125

[Alexei-B]

Replicating my comments from #125 here for completeness:

• I'm not sure what the preferred pattern is for making HTTP requests in the SDK. I've gone off and implemented my own wrappers around http and hyper that is somewhat based on the storage code and somewhat based on the key vault code. For now, I've kept it super simple, so that that it's ideally easy to throw away if it isn't what we want.

[MindFlavor]

Nice job! Thank you!

We are migrating towards HTTP client independence (using a very simple trait) but I think we can address it later!

[MindFlavor]

Nice job! 👍 👍
I only ask to simplify the client getting rid of the str borrows.

[Alexei-B]

Strings are now owned by the EventGridClient rather than borrowed.

[Alexei-B]

Nice job! Thank you!

We are migrating towards HTTP client independence (using a very simple trait) but I think we can address it later!

Great, that's awesome to hear. I've seen how the trait works in storage for example and how that can be used to make mock clients for nice unit testing and I like that approach a lot. I would have tried to replicate that, but I quickly realised that I was wondering into duplicating a lot of code between the services.

[MindFlavor]

Thank you!