feat: allow custom tabs

[Sangrene]

This PR adds support for custom tabs following this type:

export type Tab = { type: string; tab: (p: CommonTabProps) => ReactNode };

type being the Node type that should be updated.

I also added a story for this.

Should fix #49 .

[stefan-gorules]

Code looks good, we'll just have to run a few tests on our side and you can expect this to be approved early next week.

Appreciate the contribution!

[Sangrene]

Any news on this @ivanmiletic @stefan-gorules ?
Thanks

[ivanmiletic]

Hi @Sangrene was taking a look at this, as we are moving to a direction of a node specification we would like to have tabs part of a node specification.

Example you define node and you define its own tab and it will allow us to open tab for that specific node.

As we are doing a few big features in parallel, we will have time to tackle this end of next week.

[Sangrene]

I totally agree with that architecture change, I wanted to do it but felt like following the current architecture was more important :)