Added Tests and Conversion Table

Added

Supabase Identifier	Format	JSON Type	Dart Type	Runtime Tested
# int2	smallint	integer	int	✅
# int4	integer	integer	int	✅
# int8	bigint	integer	BigInt	✅
# float4	real	number	double	✅
# float8	double precision	number	double	✅
# numeric	numeric	number	num	✅
{} json	json	-	Map<String, dynamic>	✅
{} jsonb	jsonb	-	Map<String, dynamic>	✅
T text	text	string	String	✅
T varchar	character varying	string	String	✅
T uuid	uuid	string	String	✅
🗓️ date	date	string	DateTime	✅
🗓️ time	time without time zone	string	DateTime	✅
🗓️timetz	time with time zone	string	DateTime	✅
🗓️ timestamp	timestamp without time zone	string	DateTime	✅
🗓️ timestamptz	timestamp with time zone	string	DateTime	✅
💡 bool	boolean	boolean	bool	✅

mmvergara / supadart