[CLI Improvements] Deprecate commands

[schoren]

As we move resources to the resourcemanager architecture, some commands are no longer needed, since they are replaced by the [verb] [resource] new approach.

We still want to maintain backwards compatibility for existing scripts and such, so we need to still support the old commands, but make sure we let users know they are deprecated, and will be removed in future versions.

When a user tries to run one of the "old" commands, we need to show the following warning:

⚠️  Warning: The "tracetest [OLD COMMAND]" command will be deprecated soon. 
Please use the new CRUD-style format: "tracetest run [verb] [resource]".

For example, when running tracetest test run ..., we should display:

⚠️  Warning: The "tracetest test run" command will be deprecated soon. 
Please use the new CRUD-style format: "tracetest run [verb] [resource]".

List of commands (including its subcommands) to deprecate:

• export
• datastore
• environment
• test

[olha23]

do we need to include the deprecation message now in CLI for user who use test run command?
something like this:
⚠️ Warning: The "tracetest run test" command will be deprecated soon. Please use the new CRUD-style format: "tracetest run [verb] [resource]".

[schoren]

@olha23 addede the message to the description

[xoscar]

Let's add something at the top that marks this blocked until this #2297 is done

[mathnogueira]

Just a correction, tracetest test run should be deprecated. Not tracetest run test

[schoren]

@mathnogueira good catch. Just updated the description to relfect this

[jorgeepc]

Deprecation of datastore and environment was included here: #2498