Port latest cache create behavior

[renshao]

In az cli 2.70 we introduced an improvement for az acr cache create,
where this command does not need to issue a GET registry request first.

This change is needed for users with cache rule permission only. If a user
only has access to cache rule resource, the GET registry request would
fail with 503.

This commit ported this change in arccache extension, so that even
after this extension is installed, user can still run acr acr cache create command.

[Copilot]

Pull Request Overview

This PR ports the latest cache create behavior so that users with cache rule permission no longer need to perform a GET registry request before creating a cache.

• Removed the retrieval of the full registry object using get_registry_by_name.
• Introduced a new credential set ID formatting using a constant template and subscription, resource group, registry name, and credential set name.

Comments suppressed due to low confidence (2)

src/acrcache/azext_acrcache/cache.py:106

• The previous code retrieved the full registry object to get the registry ID, which is no longer available. Please confirm that get_resource_group_name_by_registry_name returns the correct value needed for constructing the credential set ID.

rg = get_resource_group_name_by_registry_name(cmd.cli_ctx, registry_name, resource_group_name)

src/acrcache/azext_acrcache/cache.py:106

• [nitpick] Consider renaming the variable 'rg' to 'resource_group' for improved clarity.

rg = get_resource_group_name_by_registry_name(cmd.cli_ctx, registry_name, resource_group_name)

[mabelegba]

update # HISTORY.rst entry to VERSION = '1.0.0c1'
@cegraybl @huanwu