Parameterize welcome and redirect-welcome routes

[javier-godoy]

The welcome and and redirect-welcome routes are hardcoded

AppLayoutAddon/src/main/resources/META-INF/resources/frontend/fc-applayout/fc-fusion-layout.ts

Lines 151 to 153 in 5c6df8f

	if (event.data == 'redirect-welcome') {
	Router.go("welcome");
	}

[mlopezFC]

This mechanism was added because an iframe was used for keycloak integration. Maybe we should remove this feature for now.

[mlopezFC]

We discussed this. One way of doing this would be to add an attribute to the web component (fusion-layout) that would allow to use something different than "welcome" path.