Include the semantic of logical operations

[meevee98]

I'm converting everything to Kotlin because I was having too many problems with Null Pointer Exception with Java. #1 is the current list of what has to be done for now.
While is everything being refactored, should be good to check the current behaviour of the relational operations in the semantic phase.

Relational Operations:

• And
  • Allowed to boolean operands
  • The result is always a boolean value. If both operands are true, the result is true. Otherwise, the result is false.
• Or
  • Allowed to boolean operands
  • The result is always a boolean value. If both operands are false, the result is false. Otherwise, the result is true.
• Not
  • Allowed to a boolean operands
  • The result is always a boolean value. If the operand is true, the result is false. Otherwise, the result is true.
• Xor
  • Allowed to a boolean operands
  • The result is always a boolean value. If the operands are different, the result is true, Otherwise, the result is false.