Deprecate duplicate commands

[shiroyama]

Checklist

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• [ ] Versions update reflected in all places (both init.py files, CHANGELOG, setup.py, setup.cfg)
• [ ] Unit tests pass locally
• [ ] Quickstart steps locally validated
• [ ] Passes unit tests in CICD pipeline (green on Github pipeline)
• [ ] Pypi RC version passes Edge CICD pipeline validation for cross-tool validation
• [ ] Pull request includes test coverage for the included changes
• [ ] Documentation is updated for the included changes

General guidelines

• [ ] Title of the pull request is clear and informative.
• [ ] There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR.

Description

Some commands can be called in two different ways (for instance, iotedgedev init and iotedgev solution init). Eventually, this duplication should be removed to simplify the tool. This is a breaking change, though; so before implementing it in the next major release, we should add a deprecation notice in such commands. This deprecation notice should be added to the help message and printed when the command is run. This can be done by setting deprecated=True in the click.Command() decorator (see documentation).

Note that the reason for this duplication is that the commands are added to two click groups (main and solution). The commands that should be deprecated are the ones corresponding to the main group.

Fixes #559

Additional information

[marianan]

looked into the pipeline failures briefly, it may be that 'deprecated' library needs to be added into requirements.txt

[shiroyama]

@marianan My apologies, the deprecated was accidentally added to the import list. By removing it everything seems working. Now the pipeline is all green. It'd be really nice if you could take a look again! Cheers!