chore(auth): merge old profiles

[Cedric / ViaDézo1er (viadezo1er)]

bt <= 0.15.1 often has create multiple profiles for the same OAuth login to use different orgs.
It's not the case anymore since 0.16.0
However the profiles are not merged together, and their default names are names of org, which can be confusing since profiles and orgs are decoupled now.

So first, merge the profiles that share app/api url, username and user email.
Second, rename the profiles.

When the profiles don't have the org name, they keep the specific name.
eg:
profile name/org name
a a
b b
z c
x d
If they all share api/app url and user name/email, a and b have the same names for profiles and org so their names will be dumped and the merged profile name will be z-x since the profiles z and x have a specific name.

Updating the profile names is however an issue for local config.json created in 0.16.0, since they store the profile name.
bt <= 0.15.1 does not.
Is it an issue to break the local config created in 0.16.0?

Also this migration code could probably be deleted one day when it's safe to assume (almost) everyone has migrated.

[github-actions]

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