Record events when an action has been taken

**Describe the solution you'd like:**
We should create events at various points in the reconciliation. For example:

* Microvm created
* Microvm deleted

**Why do you want this feature:**

As well as conditions events are helpful to understand and react to things that have happened.

Sample from [capa](https://github.com/kubernetes-sigs/cluster-api-provider-aws/blob/571f447e7f4374eaca75a1dd6c0f2d9c9e8b1f1c/exp/controllers/awsmachinepool_controller.go#L225)

**Anything else you would like to add:**
[Miscellaneous information that will assist in solving the issue.]

Start by tracing the reconciliation flow and compare its action points with the referenced capa example in awsmachinepool_controller.go around line 225. Define the events needed for actions such as microvm creation and deletion, then verify that reconciliation emits them at the appropriate points.

Written by the indexing model from the issue text.