Suppress terminal hyperlinks in non-interactive output

[Vercantez]

Fixes #35

Summary

• suppress OSC 8 hyperlinks when stdout is not a TTY or terminal decoration has been disabled
• keep explorer URL generation covered with separate unit tests
• add integration coverage for wallet output and the no-args status view in non-interactive mode

Testing

• cargo fmt --all -- --check
• cargo test -p purl hyperlink
• cargo test -p purl --test wallet_command_tests
• cargo test -p purl wallet_display_returns_full_address_when_hyperlinks_are_disabled
• cargo test -p purl --test cli_tests test_no_args_status_view_omits_osc8_hyperlinks_in_non_tty_output -- --exact

[stevekaliski-stripe]

Thanks @Vercantez !