Ability to run local services from the local registry without the need to use dev mode

[jmoreira-valory]

Is your feature request related to a problem? Please describe.

Currently, services can be built and run locally for testing (build-image, deploy build, deploy run) if one of the two conditions are met:

• Using --dev mode.
• The agent and packages are published to the remote registry.

Describe the solution you'd like

It should be possible to run and test a service locally without --dev or without publishing the packages to the remote registry. Not doing so forces, for a new user to either:

• Publish intermediate, unfinished packages to be able to run them locally, or
• Learn to use the --dev mode on their first contact with the framework, which might be a bit overkill.