Finish If Statement Parsing

[FaresAtef1]

This PR finalizes the tasks initiated in #2375. It addresses the remaining semicolon issues and incorporates additional fixes to the parser.

Modified Expressions

• Unary Prefix
• Binary

Testing

• Add new if statement tests.
• Create a new type cast method AST::Node::As.
• Create a new header file for all the matchers.

To be done

• Fix the infinite loop error in the binary expression.
• Modify the matchers for for loop.
• Use AST cast routine instead of dynamic_cast.
• Handle the following cases:

for(i=0;i<3;i++)

{k+;}

fn(i , j+2 ;)

fn(i , j ;)