Error Handling for Integer Type

[kh3rld]

Implement robust error handling for the int type, covering invalid literals, overflow, and unsupported operations.

Tasks:

• Add checks for overflow and other potential errors in integer operations.
• Update parser and interpreter to return clear error messages for invalid integer values or unsupported operations.
• Write unit tests for each error scenario.

Acceptance Criteria:

• Clear and descriptive error messages are displayed for each type of error.
• All error scenarios are covered by tests.