Added Enriched --help output

[Jokasan]

Closes #74

Added the key scan/watch options (--ai, --severity, --format,
--config, --output, --url, --supply-chain, --stats, --debug,
--wizard) directly to the root CLI group so they appear under Options:
in the top-level help output.

Values set at the group level are propagated to scan and watch as
defaults via ctx.default_map, so both invocation styles work
identically:

pyspector --ai scan path/
pyspector scan --ai path/ # unchanged, still works

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds global CLI options to configure scans and wires those values into subcommand defaults via Click’s ctx.default_map.

Changes:

• Introduces global flags/options on the root cli group (AI ruleset, severity, format, config/output paths, repo URL, supply-chain, stats, debug, wizard).
• Populates ctx.default_map for scan and watch subcommands using the root option values.

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[ParzivalHack]

Perfect PR @Jokasan, exactly what i said i wanted in Issue #74. Merging :))