[FEATURE] Verbose mode (-v, --verbose)

[AnmiTaliDev]

Add verbose mode flag to provide detailed output about each verification stage, including file lists and extraction details.

Example output:

[*] Extracting APG file...
[+] Archive extracted to /tmp/apgcheck-12345678
[*] Validating structure...
[+] Found required files: data, md5sums, metadata.json
[*] Checking metadata...
[+] Metadata valid (APG v2)
[*] Verifying files: 45 total
  ✓ data/file1.txt
  ✓ data/file2.txt