feat!: rework the public API to json/v2-style variadic options

Assisted-by: GLM 5.3 Flash

orderedmap_test.go

@@ -97,7 +97,7 @@ func TestMarshalOrderedMap(t *testing.T) {
 		m := NewOrderedMap()
 		m.Set("zebra", int64(1))
 		m.Set("alpha", int64(2))
-		out, err := NewEncoder().InlineTables(60).Marshal(map[string]any{"t": m})
+		out, err := Marshal(map[string]any{"t": m}, InlineTables(60))
 		if err != nil {
 			t.Fatal(err)
 		}