[Feature] [Sql Gateway][WIP] Implement flink catalog use mysql as metadata store backend

[zhengkezhou1]

What changes were proposed in this pull request

Issue Number: close #2888

Implement flink catalog use mysql as metadata store backend

Brief change log

Add MySQL table schema

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

(or)

This change is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

Does this pull request potentially affect one of the following parts

• Dependencies (does it add or upgrade a dependency): (no)

[zhengkezhou1]

This table is used to store all Catalogs

eg: MySQLCatalog, PGCatalog, HiveCatalog

CREATE TABLE t_catalog(
	`id` bigint auto_increment NOT NULL,
    `catalog_name` varchar(10) NOT NULL comment 'catalog name',
    `catalog_type` varchar(10) NOT NULL comment '1.jdbc 2.hive',
    `default_database` varchar(50) NOT NULL, 
    `username` varchar(50), 
    `password` varchar(50), 
    `base-url` varchar(100) comment 'jdbc connection',
    `hive-conf-dir` varchar(100) comment 'hive config path',
    `create_time` datetime DEFAULT CURRENT_TIMESTAMP NOT NULL,
    `update_time` datetime DEFAULT CURRENT_TIMESTAMP NOT NULL,
    primary key (`id`) using btree
)engine=innodb auto_increment=100000 default charset=utf8mb4 collate=utf8mb4_general_ci;

This table is used to store the database managed in Catalog

CREATE TABLE t_catalog_databases (
    `id` bigint auto_increment NOT NULL,
    `catalog_id` bigint NOT NULL,
    `database_name` varchar(100) NOT NULL comment 'databbase name in catalog', 
    `create_time` datetime DEFAULT CURRENT_TIMESTAMP NOT NULL,
    `update_time` datetime DEFAULT CURRENT_TIMESTAMP NOT NULL,
    primary key (`id`) using btree
)engine=innodb auto_increment=100000 default charset=utf8mb4 collate=utf8mb4_general_ci;

This table is used to store tables managed in Catalog

CREATE TABLE t_catalog_tables (
    `id` bigint auto_increment NOT NULL,
    `catalog_id` bigint NOT NULL,
    `catalog_database_id` bigint NOT NULL,
    `table_name` varchar(100) NOT NULL comment 'table name in database', 
    `create_time` datetime DEFAULT CURRENT_TIMESTAMP NOT NULL,
    `update_time` datetime DEFAULT CURRENT_TIMESTAMP NOT NULL,
    primary key (`id`) using btree
)engine=innodb auto_increment=100000 default charset=utf8mb4 collate=utf8mb4_general_ci;

[zhengkezhou1]

@wolfboys pls take a look

[wolfboys]

cc @GOODBOY008 Can you review this feature? BTW #2274 is also about the proposal for sqlgateway. It's time for us to move that proposal forward. 💪