Add more examples in Data Types section

[BogdanOtava]

I'd like to add more examples of how to assign/initialize the primitive and non-primitive data types in different languages.

[shhossain]

Sure.

[Wandererr01]

I'd like to add examples of initializing the primitive and non-primitive datatypes in the go language.

[arpit5220]

Hi @BogdanOtava assign me this issue , i will add data types for Apex language