backend: add note field on license

crates/migration/src/m20240709_095325_create_license.rs

@@ -23,6 +23,7 @@ impl MigrationTrait for Migration {
                     .col(ColumnDef::new(License::End).timestamp_with_time_zone())
                     .col(ColumnDef::new(License::Amount).integer())
                     .col(ColumnDef::new(License::Key).string().not_null())
+                    .col(ColumnDef::new(License::Note).string())
                     .col(ColumnDef::new(License::GroupId).uuid().not_null())
                     .foreign_key(
                         ForeignKey::create()
@@ -54,6 +55,7 @@ enum License {
     Amount,
     Key,
     GroupId,
+    Note,
 }
 
 #[derive(DeriveIden)]