Add networks chain explorer

[ghost]

Is your feature request related to a problem?

Sometimes we want to know all the transaction in chain for the network transactions (ie. node shared secrets, origin, faucet, ...)
And the explorer doesn't provide this view for now.
The only way is to fetch by the transaction address and then explorer chain, or leverage the GraphQL API

Describe the solution you'd like

We can add network chains viewer on the explorer in the navtab under "Chains", a bit like Beacon and Oracle chains.
So I propose to have a view on:

• Add node shared secrets chain explorer #411
• Add origin chain explorer #412
• Add node rewards chain explorer #413

Additional context

No response