Database validations

[amirrezaask]

This PR will add database validations:

• Checking all tables that are inferred from user-defined entities are present in database
• Check all inferred tables schemas with what is in the database.

[coveralls]

Pull Request Test Coverage Report for Build 2003221965

• 115 of 139 (82.73%) changed or added relevant lines in 5 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.2%) to 84.485%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
binder.go	2	4	50.0%
connection.go	58	65	89.23%
orm.go	28	35	80.0%
dialect.go	26	34	76.47%

Files with Coverage Reduction	New Missed Lines	%
binder.go	2	88.89%

Totals
Change from base Build 2001214546:	-0.2%
Covered Lines:	1296
Relevant Lines:	1534

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💛 - Coveralls