feat: basic integration of teams

lib/data/db/tables/match_table.dart

@@ -12,6 +12,7 @@ class MatchTable extends Table {
       .references(GroupTable, #id, onDelete: KeyAction.setNull)
       .nullable()();
   TextColumn get name => text()();
+  BoolColumn get isTeamMatch => boolean().withDefault(const Constant(false))();
   TextColumn get notes => text()();
   DateTimeColumn get createdAt => dateTime()();
   DateTimeColumn get endedAt => dateTime().nullable()();

lib/data/db/tables/team_table.dart

@@ -4,6 +4,8 @@ class TeamTable extends Table {
   TextColumn get id => text()();
   TextColumn get name => text()();
   DateTimeColumn get createdAt => dateTime()();
+  TextColumn get color => text().withDefault(const Constant('blue'))();
+  IntColumn get score => integer().withDefault(const Constant(0))();
 
   @override
   Set<Column<Object>> get primaryKey => {id};