fix(api): add external_url while a replacement is found for auth/studio

[StanGirard]

Fixes #2527

Currently, the external_api_url is not read from the config.toml.

I know there is an ongoing subject about mutualizing auth/studio url but it requires too much changes.

This is a quick fix that improves the features of the CLI without removing any

[coveralls]

Pull Request Test Coverage Report for Build 10529825124

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 10 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.08%) to 59.972%

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Files with Coverage Reduction	New Missed Lines	%
internal/storage/rm/rm.go	5	83.72%
internal/gen/keys/keys.go	5	12.9%

Totals
Change from base Build 10506225474:	-0.08%
Covered Lines:	6357
Relevant Lines:	10600

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💛 - Coveralls

[sweatybridge]

Yup, agree this is a good interim solution. Thanks for contributing!