feat: extend software license lifecycle data

Make license type optional and add lifetime or recurring renewal terms, license file and key storage, and provider portal URLs across the UI, API, filters, imports, translations, and migrations.

netbox_slm/api/serializers.py

@@ -24,8 +24,14 @@ class SoftwareLicenseSerializer(NetBoxModelSerializer):
             "stored_location_url",
             "start_date",
             "expiration_date",
+            "lifetime",
+            "renewal_interval",
+            "renewal_interval_unit",
             "support",
             "license_amount",
+            "license_file",
+            "license_key",
+            "provider_portal_url",
             "software_product",
             "version",
             "installation",
@@ -49,6 +55,20 @@ class SoftwareLicenseSerializer(NetBoxModelSerializer):
             raise serializers.ValidationError(
                 {"tenant": _("The selected tenant does not belong to the selected tenant group.")}
             )
+        lifetime = attrs.get("lifetime", getattr(self.instance, "lifetime", False))
+        renewal_interval = attrs.get("renewal_interval", getattr(self.instance, "renewal_interval", None))
+        renewal_interval_unit = attrs.get(
+            "renewal_interval_unit", getattr(self.instance, "renewal_interval_unit", "")
+        )
+        expiration_date = attrs.get("expiration_date", getattr(self.instance, "expiration_date", None))
+        if bool(renewal_interval) != bool(renewal_interval_unit):
+            raise serializers.ValidationError(
+                {"renewal_interval": _("Renewal interval and unit must be specified together.")}
+            )
+        if lifetime and (renewal_interval or renewal_interval_unit or expiration_date):
+            raise serializers.ValidationError(
+                {"lifetime": _("A lifetime license cannot have a renewal interval or expiration date.")}
+            )
         return attrs