✨ Support bytes in Options and Arguments

[doubledare704]

• Added support for bytes type in Typer by:
• Creating a custom BytesParamType class in typer/main.py
• Modifying the get_click_type function to handle bytes type
• Created comprehensive tests:
• Basic tests for bytes type in tests/test_bytes_type.py
• Advanced tests for base64 and hex encoding/decoding in tests/test_bytes_encoding.py
• Created example applications:
• Simple bytes example in examples/bytes_type_example.py
• Comprehensive encoding/decoding example in examples/bytes_encoding_example.py

Attempt to solve #536