Common utilities bar for each component

[josepjaume]

🎩 User Story

Components have a common set of actions that should be represented in a common space, so they're not arbitrarily mixed with each component's implementation. We should find a common pattern so we take that responsibility from the component implementers.

Examples are: "Export", "Rename", "Edit" and maybe even "permissions".

My guess is that we could put them besides or maybe below the component's title, so the rest of the layout is for the component implementation to use.

📋 Related documentation

None

🎯 Acceptance criteria

There's a common set of actions that can be done o all components that shouldn't be up to each component to implement.

📌 Related issues

decidim/decidim#1399