(/=) SQLToken

start specifying some of the regular expressions for the token classes
(/=) Specify SQLTokenClass (/=) Implement SQLLexer

SQLLexer, SQLToken:
The regular expressions are formulated such that keywords only match on
word boundaries (hence the \\b) and the rules are listed in an order
such that longer matches appear first, as the Lexer will simply return
the first match.

SQLTokenTest:
this isn’t really a unit test yet, but just a quick way to test some
queries