Adds MySQL syntax

[belchior]

Adds MySQL syntax to SQL Query Builder

# Cargo.toml

sql_query_builder = { version = "2.x.x", features = ["mysql"] }

Reference

• https://dev.mysql.com/doc/refman/8.4/en/alter-table.html
• https://dev.mysql.com/doc/refman/8.4/en/commit.html
• https://dev.mysql.com/doc/refman/8.4/en/create-index.html
• https://dev.mysql.com/doc/refman/8.4/en/create-table.html
• https://dev.mysql.com/doc/refman/8.4/en/delete.html
• https://dev.mysql.com/doc/refman/8.4/en/drop-index.html
• https://dev.mysql.com/doc/refman/8.4/en/drop-table.html
• https://dev.mysql.com/doc/refman/8.4/en/insert.html
• https://dev.mysql.com/doc/refman/8.4/en/savepoint.html
• https://dev.mysql.com/doc/refman/8.4/en/select.html
• https://dev.mysql.com/doc/refman/8.4/en/update.html
• https://dev.mysql.com/doc/refman/8.4/en/values.html