Normalize missing FIT lap bounds and grade-adjusted speed units

[shkyyy18]

Bug

The unbounded garmin-fit-sdk dependency currently resolves to 21.217.0. Its profile exposes five lap fields and one session field that are missing from the unit-conversion tables:

• Lap nec_lat, nec_long, swc_lat, swc_long stay in semicircles rather than degrees.
• Lap/session avg_grade_adjusted_speed stays in m/s rather than km/h.

This also causes the existing test_table_covers_installed_profile tests for lap and session to fail. For example, a synthetic lap parsed with include_all_columns=True returns nec_lat=536870912 instead of 45.0, and avg_grade_adjusted_speed=10.0 instead of 36.0.

Fix

Add the missing entries to the existing tables. No new dependencies, default output columns or public APIs; existing vertical-rate exceptions and raw FIT-native parsing remain unchanged.

Tests

• Full suite passed on Python 3.12 with garmin-fit-sdk 21.217.0 and pandas 3.0.6.
• All configured pre-commit hooks passed: Ruff checks/formatting, Pyright and pytest.

Prepared with AI assistance; all stated tests were actually run using synthetic FIT data. Tests on this Windows machine used Python UTF-8 mode because existing README tests read UTF-8 text with the platform-default encoding.

[tabishm52]

Thanks for the fix! I pushed a small follow-up: sorted the new entries into the existing table order, bumped the SDK version in the module docstring, and dropped the new tests and README note. test_table_covers_installed_profile already pins these entries against the installed profile, and the existing laps/raw-parsing tests cover the conversion path.