tests: Add ISM330DL temperature to multidriver comparison scenario.

[nedseb]

Closes #101

Summary

Add ISM330DL temperature sensor to the multidriver temperature comparison scenario:

• Added ism330dl to the drivers list
• Added ISM330DL temperature reading to the "Read all temperature sensors" test
• Added ISM330DL to the "Offset-align all sensors" test (uses set_temp_offset() from ism330dl: Add two-point temperature calibration methods. #121)

Depends on

• PR ism330dl: Add two-point temperature calibration methods. #121 (ISM330DL temperature calibration methods)

Test plan

• Run hardware temperature comparison tests with STeaMi board connected:

  python3 -m pytest tests/ --port /dev/ttyACM0 -k "temperature and comparison" -s -v

Test results

======================================================= test session starts ========================================================
platform linux -- Python 3.13.7, pytest-8.3.5, pluggy-1.5.0 -- /usr/bin/python3
cachedir: .pytest_cache
rootdir: /home/nedjar/sandbox/micropython-steami-lib
configfile: pytest.ini
plugins: typeguard-4.4.2
collected 199 items / 195 deselected / 4 selected                                                                                  

tests/test_scenarios.py::test_scenario[Temperature comparison (all sensors)/Read all temperature sensors/hardware] --- Temperature Comparison ---
  WSEN-HIDS   : 27.97 C
  LIS2MDL     : 24.5 C
  WSEN-PADS   : 25.61 C
  HTS221      : 27.82 C
  ISM330DL    : 26.04 C
  Spread: 2.36 C
PASSED
tests/test_scenarios.py::test_scenario[Temperature comparison (all sensors)/Temperature spread with barometer/hardware] HTS221: 27.97 C  |  WSEN-PADS: 27.06 C  |  Spread: 0.91 C
PASSED
tests/test_scenarios.py::test_scenario[Temperature comparison (all sensors)/Offset-align all sensors to WSEN-HIDS reference/hardware] --- Before offset alignment ---
  WSEN-HIDS (ref): 27.79 C
  HTS221:          27.79 C
  WSEN-PADS:       27.11 C
  LIS2MDL:         24.5 C
  ISM330DL:        26.08 C
  Spread: 3.29 C
--- After offset alignment ---
  WSEN-HIDS (ref): 27.79 C
  HTS221:          27.79 C
  WSEN-PADS:       27.79 C
  LIS2MDL:         27.79 C
  ISM330DL:        27.79 C
  Spread: 0.0 C
PASSED
tests/test_scenarios.py::test_scenario[Temperature comparison (all sensors)/Temperature values feel correct/hardware]   [MANUAL] Les températures lues sont-elles cohérentes entre elles et avec l'ambiance ? [Entree=oui / Echap=non] 
PASSED

================================================ 4 passed, 195 deselected in 43.00s ================================================

[Copilot]

Pull request overview

Adds the ISM330DL temperature sensor to the multidriver temperature comparison board scenario, extending both the reading and offset-alignment tests.

Changes:

• Added ism330dl to the drivers list and sys.path in both test scripts
• Added ISM330DL temperature reading and offset alignment logic following the existing pattern for other sensors

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