feat(filters): add poethepoet (poe) task runner support

[shaswatshah]

Summary

• Add src/filters/poe.toml filter for the poethepoet (poe) Python task runner
• Strips Poe => echo headers, help banner lines (Poe the Poet, version, USAGE, GLOBAL OPTIONS, CONFIGURED TASKS), and trailing Result: Task ... messages
• Follows the same TOML pattern as just / mise / task from Release v0.31.0 — develop → master #666
• Bumps built-in filter count assertion 58 → 59 (and the concat-discoverability test 59 → 60)

Test plan

• cargo fmt --all --check — clean
• cargo test --all — 1358 passed, 0 failed, 6 ignored
• cargo test toml_filter — 49 passed (including the 4 inline [[tests.poe]] cases)
• Inline tests cover: command-output passthrough, error preservation, all-stripped → on_empty, empty input

Important: All PRs must target the develop branch (not master).
See CONTRIBUTING.md for details.

[CLAassistant]

All committers have signed the CLA.