Add query repair suggestions

[duriantaco]

Summary

• Expand schema validation from selected fields only to selected fields, filters, sorting, grouping, and aggregations
• Add nested field discovery for repair suggestions
• Print nearby field matches and a copy-paste Try command when jonq can repair a typo
• Keep the behavior flagless and focused on helping users recover from wrong JSON paths

Manual checks

• python -m jonq tests/json_test_files/simple.json "select nme"
• python -m jonq tests/json_test_files/simple.json "select name where cty = 'Chicago'"
• python -m jonq tests/json_test_files/simple.json "select name sort ag desc"
• python -m jonq tests/json_test_files/simple.json "select avg(ag) as avg_age"
• python -m jonq tests/json_test_files/simple.json "select name where city = 'Chicago'"
• python -m jonq tests/json_test_files/simple.json "select name sort age desc"
• python -m jonq tests/json_test_files/simple.json "select avg(age) as avg_age"

Verification

• pytest -q tests/test_new_features.py
• pytest -q
• uvx ruff check --force-exclude jonq tests
• python -m compileall -q jonq
• LC_ALL=C LANG=C python -m sphinx -b html docs/source /tmp/jonq-docs-query-repair
• python -m pre_commit run --all-files
• python -m pre_commit run --hook-stage pre-push --all-files