Added `ColumnType::Blob` #2116

Job	Run time
Build `sea-query`	46s
Clippy	24s
Build `sea-query-postgres`	43s
Build `sea-query-binder` (async-std, rustls)	1m 57s
Build `sea-query-rusqlite`	37s
Rustfmt	17s
Derive Tests	44s
Unit Test	1m 40s
MySQL (8, sqlx_mysql)	1m 19s
MariaDB (10.6, sqlx_mysql)	1m 18s
Any	1m 34s
PostgreSQL (14.4, postgres)	52s
MySQL (5.7, sqlx_mysql)	1m 18s
PostgreSQL (14.4, sqlx_postgres)	1m 12s
SQLite (rusqlite)	22s
PostgreSQL (13.7, postgres)	53s
SQLite (sqlx_sqlite)	53s
PostgreSQL (13.7, sqlx_postgres)	1m 21s
PostgreSQL (12.11, postgres)	1m 5s
PostgreSQL (12.11, sqlx_postgres)	1m 17s
	20m 32s

Provide feedback