please add the "mysql" in Format language parameter

[SangsooYoo]

Hi guys. I found a small bug while using your module. If a query include '!=' and invoke getStatement with Format paramet (language "sql") , it's transpiled to "! =". So I met the syntax error because of '! ='. it should be '!=' (the space between ! and = should be removed) in mysql. I traced what happen if I pass "sql" in language parameter. and the sql formatter module in dependency list transpiled it like that. and I figure out that it's transpiled well if I pass "mysql" in langauge parameter by sql formatter. Simply, this bug will be gone if you guys put "mysql" keyword in language parameter whitelist. Thanks.

[OldBlackJoe]

hello, could you please make pull requrst for this?