Improve Invalid GraphQL Name message

[RubenCerna2079]

Why make this change?

• Solves issue Change SqlMetadataProvider Exception message #3486

What is this change?

• Changed the message in SqlMetadataProvider so that also shows the entity which has the invalid column
• Added new function to check if the column in an entity has whitespaces which is an invalid format, this issue was being catched by HotChocolate but it is more useful for the user if it is shown with the message in SqlMetadataProvider.

How was this tested?

• Integration Tests
• Unit Tests

Sample Request(s)

• Example REST and/or GraphQL request to demonstrate modifications
• Example of CLI usage to demonstrate modifications