chore: migrate Address/Contact custom fields from JSON fixtures to install (backport #55084) (#55088)

Co-authored-by: diptanilsaha <diptanil@frappe.io>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
fixtures to install (#55084)

erpnext/setup/install.py

@@ -25,6 +25,7 @@ def after_install():
 	setup_repost_defaults()
 	create_print_setting_custom_fields()
 	create_marketing_campaign_custom_fields()
+	create_address_and_contact_custom_fields()
 	create_custom_company_links()
 	add_all_roles_to("Administrator")
 	create_default_success_action()
@@ -145,6 +146,37 @@ def create_marketing_campaign_custom_fields():
 	)
 
 
+def create_address_and_contact_custom_fields():
+	create_custom_fields(
+		{
+			"Address": [
+				{
+					"label": _("Tax Category"),
+					"fieldname": "tax_category",
+					"fieldtype": "Link",
+					"options": "Tax Category",
+					"insert_after": "fax",
+				},
+				{
+					"label": _("Is Your Company Address"),
+					"fieldname": "is_your_company_address",
+					"fieldtype": "Check",
+					"default": "0",
+					"insert_after": "linked_with",
+				},
+			],
+			"Contact": [
+				{
+					"label": _("Is Billing Contact"),
+					"fieldname": "is_billing_contact",
+					"fieldtype": "Check",
+					"insert_after": "is_primary_contact",
+				},
+			],
+		}
+	)
+
+
 def create_default_success_action():
 	for success_action in get_default_success_action():
 		if not frappe.db.exists("Success Action", success_action.get("ref_doctype")):