Feature/update lan interconnect

• Add IPAM handling to LAN Switch Interconnect workflows, based on automatic calculation using internal site ID
• Site now also contains attribute site_contains_optical_equipment
• Add support for IPv6 in LAN Switch Interconnect
• Add support for custom VLAN IDs for DCN and switch management, but they have default values of 103 and 998

gso/migrations/versions/2024-11-04_e854e0c35e20_update_lan_switch_interconnect.py

 """Update LAN Switch Interconnect.
 
 Revision ID: e854e0c35e20
-Revises: 28c1723c6a00
+Revises: 79192e72131c
 Create Date: 2024-11-04 17:21:14.612740
 
 """
@@ -10,7 +10,7 @@ from alembic import op
 
 # revision identifiers, used by Alembic.
 revision = 'e854e0c35e20'
-down_revision = '28c1723c6a00'
+down_revision = '79192e72131c'
 branch_labels = None
 depends_on = None