add/fix table index setting

[Garthi]

Hi,

in the column you can set a indexType = IndexType.standardIndex but is had no effect right now, i have implement it for MySQL and MariaDB as a first suggestion, as a final or extra solution i think we need a separate way to add indexes with the Orm Annotation like

@Orm(
  tableName: 'user',
  generateMigrations: true,
  indexes: [
    @Index(name="search_idx", columns=["name", "email"])
  ]
)

i hope it is ok that we start with a MySQL/MariaDB solution :-)

[Garthi]

forgotten to add a sample statement

CREATE TABLE user (
  id int PRIMARY KEY,
  group_id int,
  INDEX(`group_id`) 
);

[dukefirehawk]

Improvements to ORM for MySQL/MariaDb are always welcome.