How to set date partition automatically - mysql

Question

When I tried to create new table table_new by using DDL of existing table table1. To achieve this, following command returned its DDL.
show create table table1
Its DDL is at the bottom of the page, I'd like to set partition in snapshot_date.
and want to set them from 2022-01-01 to 2027-01-01 in each day. I tried to set them manually, but they take long time.
My question is
Are there any good way to achieve this?
What is /*!50500 in following DDL ?
If someone has an opinion or materials, please let me know. Thanks
CREATE TABLE `table_new` (
`snapshot_day` date NOT NULL,
`A` varchar(14) NOT NULL,
`B` char(10) NOT NULL,
`C` char(10) DEFAULT NULL,
KEY `INDEX` (`A`,`B`,`C`,`snapshot_day`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
/*!50500 PARTITION BY RANGE COLUMNS(snapshot_day)
(PARTITION p20220101 VALUES LESS THAN ('2022-01-01') ENGINE = InnoDB,
PARTITION p20220102 VALUES LESS THAN ('2022-01-02') ENGINE = InnoDB,
PARTITION p20220103 VALUES LESS THAN ('2022-01-03') ENGINE = InnoDB,
PARTITION p20220104 VALUES LESS THAN ('2022-01-04') ENGINE = InnoDB,
PARTITION p20220105 VALUES LESS THAN ('2022-01-05') ENGINE = InnoDB,
PARTITION p20220106 VALUES LESS THAN ('2022-01-06') ENGINE = InnoDB,
PARTITION p20220107 VALUES LESS THAN ('2022-01-07') ENGINE = InnoDB,
PARTITION p20220108 VALUES LESS THAN ('2022-01-08') ENGINE = InnoDB,
PARTITION p20220109 VALUES LESS THAN ('2022-01-09') ENGINE = InnoDB,
PARTITION p20220110 VALUES LESS THAN ('2022-01-10') ENGINE = InnoDB,
PARTITION p20220111 VALUES LESS THAN ('2022-01-11') ENGINE = InnoDB,
PARTITION p20220112 VALUES LESS THAN ('2022-01-12') ENGINE = InnoDB) */