[Module Proposal]: `avm/res/chaos/experiment`

### Check for previous/existing GitHub issues/module proposals

- [x] I have checked for previous/existing GitHub issues/module proposals.

### Check this module doesn't already exist in the module indexes

- [x] I have checked for that this module doesn't already exist in the module indexes.

### Bicep or Terraform?

Bicep

### Module Classification?

Resource Module

### Module Name

avm/res/chaos/experiment

### Module Details

Implement experiments, targetTypes, targets, etc.

https://learn.microsoft.com/en-us/azure/templates/microsoft.chaos/allversions

### Do you want to be the owner of this module?

Yes

### Module Owner's GitHub Username (handle)

jbinko

### (Optional) Secondary Module Owner's GitHub Username (handle)

_No response_

Start with the proposed module name avm/res/chaos/experiment and the Azure Chaos all-versions resource template reference linked in the issue. Determine the required experiments, targetTypes, and targets coverage, then confirm the module is implemented and aligned with the Bicep resource-module classification.

Written by the indexing model from the issue text.