feat: azure event hubs trigger (#1140)

* build: updated codegen

Signed-off-by: Joshua Jorel Lee <joshua.jorel.lee@gmail.com>

* feat: added AzureEventHubsTrigger reference.

Signed-off-by: Joshua Jorel Lee <joshua.jorel.lee@gmail.com>

* feat: added Azure Event Hubs trigger template context and creation.

Signed-off-by: Joshua Jorel Lee <joshua.jorel.lee@gmail.com>

* feat: send events to Azure Event Hubs.

Signed-off-by: Joshua Jorel Lee <joshua.jorel.lee@gmail.com>

* build: updated dependencies

Signed-off-by: Joshua Jorel Lee <joshua.jorel.lee@gmail.com>

* doc: added azure event hubs example

Signed-off-by: Joshua Jorel Lee <joshua.jorel.lee@gmail.com>

* docs: removed service account name reference

Signed-off-by: Joshua Jorel Lee <joshua.jorel.lee@gmail.com>

* doc: fixed indentation. removed service account from the example.

Signed-off-by: Joshua Jorel Lee <joshua.jorel.lee@gmail.com>