fix(fcs): add IOM limit validation, improve risks examples, and enhance error handling

[eeran-cs]

Summary

• IOM list: add a `--limit` cap of 100 with a clear error message when exceeded (the API returns an error for larger values)
• Risks list: correct and expand the `--filter` examples — severity values are title case (`High`, `Critical`), and the `cloud_provider` FQL field is unreliable so examples now show `--grep` and `jq` alternatives; fix sort syntax from `field.desc` to `field|desc`
• Error handling: add a `filterHints` map so `HandleAPIError` surfaces known filter field names on 400 responses; add human-readable keys to `featureRequirements` for the compliance 404 case
• Rule table columns: expand `ruleTableDef` to include all fields returned by the rules API (`short_code`, `subdomain`, `scope_type`, `description`, `logic`, `logic_format`, `resource_types`, `auto_remediable`, `cloneable`, `visible`, `created_at`, `updated_at`) so they are selectable via `--columns`
• `--max-col-width` flag: add per-command control over truncation width; `--no-truncate` now correctly disables the 50-char default limit

Test plan

• `falcon fcs iom list --limit 101` returns a clear error
• `falcon fcs risks list --filter "severity:'High'"` works
• `falcon fcs risks list --sort "severity|desc"` works
• `HandleAPIError` on a 400 from `ContainerCombined` includes the filter field hint
• Compliance 404 returns the feature-not-provisioned message via the human-readable keys
• `falcon fcs policies rules list --columns short_code,logic` shows those columns
• `falcon fcs policies rules list --max-col-width 120` truncates at 120 chars
• `falcon fcs policies rules list --no-truncate` shows full column values