Easier setup of Blueprints for self-hosted customers

[joepavitt]

Description

We have a collection of useful Blueprints on our FlowFuse Cloud environment, listed here: https://flowfuse.com/blueprints/

However, these are not easily added to a self-hosted environment at the moment, as each Blueprint needs to be manually setup by our Customer Success team.

This request therefore asks for a few things:

• We should provide the option in the Admin UI to "import" blueprints, so that for self-hosted users, we can provide a single file (probably json) and then they can import accordingly.
• Admin users should be able to "export" all blueprints too, such that we can easily share the blueprints we create for FlowFuse Cloud.

Which customers would this be available to

All

Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate