chore: support multi-org group sync with runtime configuration (#14578)

- Implement multi-org group sync
- Implement runtime configuration to change sync behavior
- Legacy group sync migrated to new package

coderd/coderdtest/uuids_test.go

@@ -0,0 +1,17 @@
+package coderdtest_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/coder/coder/v2/coderd/coderdtest"
+)
+
+func TestDeterministicUUIDGenerator(t *testing.T) {
+	t.Parallel()
+
+	ids := coderdtest.NewDeterministicUUIDGenerator()
+	require.Equal(t, ids.ID("g1"), ids.ID("g1"))
+	require.NotEqual(t, ids.ID("g1"), ids.ID("g2"))
+}