[Module Proposal]: `avm/res/monitor/account` (Microsoft Monitor Accounts)

### 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/monitor/account`

### Module Details

Hi,

We would appreciate it, if the module Microsoft.Monitor accounts could be created as per https://learn.microsoft.com/en-us/azure/templates/microsoft.monitor/accounts?pivots=deployment-language-bicep

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

No

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

_No response_

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

_No response_

Start with the Azure Monitor accounts template linked in the issue and review existing Bicep resource modules and the module indexes for the repository’s expected structure. Create the `avm/res/monitor/account` resource module following those conventions, with coverage of the documented Microsoft.Monitor account resource, then verify that it is represented in the module indexes.

Written by the indexing model from the issue text.