feat: Implement the parsers

[vyfor]

This checklist provides a general indication of whether a particular parser has been implemented. Once the checklist is completed, each parser will need further testing, as they are not guaranteed to function properly just yet.

• Annotations
• Package
• Imports
• Statements
  • Declarations
    • Constructor
    • Function
    • Init block
    • Property
    • Typealias
    • Entity (classes, objects, interfaces)
  • Expressions
    • Literal
    • Bracket (array accessor)
    • Binary ops
    • Unary ops
    • Break
    • Continue
    • For loop
    • While loop
    • If statement
    • Try-catch-finally
    • When expression
    • Call expression
    • Lambda
    • Property reference
    • Reference
    • String template
    • This expression
    • Super expression
    • Throw
    • Return
    • Object keyword
  • Types
    • Simple types
    • Function types
    • Parameters
    • Type parameters
    • Type bounds