DOC-4234 added bitmap examples (#3124)

Co-authored-by: Vladyslav Vildanov <117659936+vladvildanov@users.noreply.github.com>

doctests/bitmap_tutorial_test.go

@@ -0,0 +1,92 @@
+// EXAMPLE: bitmap_tutorial
+// HIDE_START
+package example_commands_test
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/redis/go-redis/v9"
+)
+
+// HIDE_END
+
+func ExampleClient_ping() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr:     "localhost:6379",
+		Password: "", // no password docs
+		DB:       0,  // use default DB
+	})
+
+	// REMOVE_START
+	rdb.Del(ctx, "pings:2024-01-01-00:00")
+	// REMOVE_END
+
+	// STEP_START ping
+	res1, err := rdb.SetBit(ctx, "pings:2024-01-01-00:00", 123, 1).Result()
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println(res1) // >>> 0
+
+	res2, err := rdb.GetBit(ctx, "pings:2024-01-01-00:00", 123).Result()
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println(res2) // >>> 1
+
+	res3, err := rdb.GetBit(ctx, "pings:2024-01-01-00:00", 456).Result()
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println(res3) // >>> 0
+	// STEP_END
+
+	// Output:
+	// 0
+	// 1
+	// 0
+}
+
+func ExampleClient_bitcount() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr:     "localhost:6379",
+		Password: "", // no password docs
+		DB:       0,  // use default DB
+	})
+
+	// REMOVE_START
+	_, err := rdb.SetBit(ctx, "pings:2024-01-01-00:00", 123, 1).Result()
+
+	if err != nil {
+		panic(err)
+	}
+	// REMOVE_END
+
+	// STEP_START bitcount
+	res4, err := rdb.BitCount(ctx, "pings:2024-01-01-00:00",
+		&redis.BitCount{
+			Start: 0,
+			End:   456,
+		}).Result()
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println(res4) // >>> 1
+	// STEP_END
+
+	// Output:
+	// 1
+}