Feature/add validation workflows

• Fix the product_validation task
• Add Router verification workflow
• Add IP Trunk verification workflow
• Update documentation
• Add modify_note workflow to all products
• Update translations
• Note: The router creation workflow now fails if IPAM is incorrectly configured, with the reasoning that the step can be retried after amending the problem. This can be reverted.

gso/products/product_blocks/iptrunk.py

@@ -89,7 +89,7 @@ class IptrunkSideBlockProvisioning(IptrunkSideBlockInactive, lifecycle=[Subscrip
     """An IP trunk side that is being provisioned."""
 
     iptrunk_side_node: RouterBlockProvisioning
-    iptrunk_side_ae_iface: str | None = None
+    iptrunk_side_ae_iface: str
     iptrunk_side_ae_geant_a_sid: str | None = None
     iptrunk_side_ae_members: LAGMemberList[IptrunkInterfaceBlockProvisioning]  # type: ignore[assignment]
 
@@ -98,7 +98,7 @@ class IptrunkSideBlock(IptrunkSideBlockProvisioning, lifecycle=[SubscriptionLife
     """An active IP trunk side."""
 
     iptrunk_side_node: RouterBlock
-    iptrunk_side_ae_iface: str | None = None
+    iptrunk_side_ae_iface: str
     iptrunk_side_ae_geant_a_sid: str | None = None
     iptrunk_side_ae_members: LAGMemberList[IptrunkInterfaceBlock]  # type: ignore[assignment]