[US] As a user, I want to see on which chains a Portal has been deployed

[alainncls]

Note

This needs to be merged onto the feat/multichain branch

As a user,
I want to see on which chains a Portal has been deployed,
So that it's easier to find and use it

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Currently, Portals are accessed at https://explorer.ver.ax/[CHAIN_NAME]/portals/[PORTAL_ID].
Now that we are moving to a chain agnostic approach, the URL will be https://explorer.ver.ax/schemas/[PORTAL_ID].

Detail page

On the detail page (https://explorer.ver.ax/portals/[PORTAL_ID]), we should display the exhaustive list of networks where this Portal is available. This list is a list of logos + tooltips, when hovering the logos, with the chains names.

For now at least, we probably don't have 2 Portals with the exact same address on 2 network but should anticipate the case.

Table view

On any table view (Search results + https://explorer.ver.ax/portals), the logos should be displayed in small on the same row. Up to 4 logos, and if there are more chains, add a + x networks.