Support Bicep complete mode in azd provision

[rajeshkamal5050]

Discussed in #2519

^{Originally posted by bioerrorlog July 12, 2023}
Bicep's default deployment mode is Incremental mode, but I want to manage the resources in Complete mode.

In bicep, the --mode option can be used to specify the deoloyment mode, but how can I specify it in azd?

[weikanglim]

With deployment stacks, resources that are not tracked in Bicep is automatically deleted. I wonder if this is in some ways, better for our users here and so we should avoid adding Bicep Complete mode as a feature.

The only slight difference between deployment stacks and Complete mode in Bicep is that: In complete mode, other resources not tracked in the resource group is automatically deleted. Compared to deployment stacks, where the source of truth is the Bicep files themselves.

Added a discussion answer here referencing deployment stacks.