[FEATURE] Implement a `.compare()` method for `QasmModule`

[TheGupta2012]

Feature Description

Signature: .compare(other_module)

Purpose: Compares two QasmModule objects across multiple attributes: qubit count, depth, gate counts, external gates, user operation history, etc.

Output: Uses tabulate for a formatted comparison table in stdout.

Implementation (Optional)

Comparison Attributes

1. Qubit Count

2. Depth

3. Gate Counts: Per-gate-type statistics (e.g., count of CX, H, X, etc.)

4. External Gates: List of gates marked as external (e.g., from loads(external_gates=...))

5. User Operation History: A list of operations performed on the module

6. TBD

User Operation History

Helps user understand how they arrived at the current state of their module object.

• Initialize: As a list property in QasmModule (e.g., self._user_operations = []).
• Record: Append operation names and params (e.g., "unroll", "validate", "segment") to the list whenever a method is called.
• Output: Include this list in the comparison table.