fix(bazaar-backend): use the new auth system

[anicke]

Hey, I just made a Pull Request!

The bazaar-backend now uses the "new auth" system. The identity service has been removed in Backstage
making it impossible to use the bazaar without these changes.

Also did some house keeping.

✔️ Checklist

• A changeset describing the change and affected packages. (more info)
• Added or updated documentation
• Tests for new functionality and regression tests for bug fixes
• Screenshots attached (for UI changes)
• All your commits have a Signed-off-by line in the message. (more info)

[backstage-goalie]

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
@backstage-community/plugin-bazaar-backend	workspaces/bazaar/plugins/bazaar-backend	minor	v0.3.17

[awanlin]

Hi @anicke, given that createRouter should be removed does it make more sense to mark that as deprecated and avoid this change entirely? or is there some other way around this? Feel like double work. Ideally you should be using the New Backend System. More details here: #1176

[anicke]

The reason for this change is the removal of the identity service. Since there is no "coreServices.identity" any more these changes are necessary for this plugin to work using the new backend system starting with v1.31.0-next.0.

[awanlin]

The reason for this change is the removal of the identity service. Since there is no "coreServices.identity" any more these changes are necessary for this plugin to work using the new backend system starting with v1.31.0-next.0.

I am aware of this, what I'm trying to ask is there a way we can get around this as you have been working on the code recently I was hoping you might have some ideas. If this can't be avoided then that's the way it is.

[anicke]

fixed by #1238