Cli-microsoft365: Deprecate the @pnp/office365-cli package

[waldekmastykarz]

Related to #1635

After releasing CLI as @pnp/microsoft365-cli, we should deprecate the @pnp/office365-cli package to make it clear that it will no longer be updated.

[waldekmastykarz]

Do we really want to deprecate all v2 versions on npm or do we leave them be and update the readme pointing people to the new package name?

@pnp/cli-for-microsoft-365-maintainers

[garrytrinder]

What would be the reason not to deprecate? 🤔

I would say deprecate v2, any fixes and new features will go into v3 from now on anyway and users would have to use the new package to get new updates.

[waldekmastykarz]

I just noticed that there is a way to deprecate the whole package rather than a specific version, so perhaps that would be clearer then.

[waldekmastykarz]

Deprecating a package will show a warning similar to following on top of the package page:

In the deprecation message we can point to the new package name and we can leave all versions as-is in case someone needs them for one reason or another.

[waldekmastykarz]

Done