move can ignition to opendbc

[elkoled]

opendbc PR needs to be merged before: commaai/opendbc#3370

Move ignition_can_hook from panda can_common.h to opendbc ignition.h

Validation
Replayed routes from commaCarDataset through panda and opendbc can-ignition hooks for byte-identical output per frame.

Brand	Model	Route
GM	BUICK_REGAL	d3e16b209dc1807a/000000c5--69693a8087
GM	CADILLAC_ESCALADE	defd7f8491ad9254/0000007b--901c1643de
GM	CADILLAC_ESCALADE_ESV_2019	d0a547a2efe445ba/00000002--b65614d603
GM	CADILLAC_XT4	923c49a3a2bb6ace/00000027--0b264ff599
GM	CHEVROLET_BOLT_EUV	09fbf79217ecf8be/2024-05-27--19-03-45
GM	CHEVROLET_EQUINOX	b82c5b6d3d4ad9f6/00000121--763f681dac
GM	CHEVROLET_SILVERADO	1c02b454e6265e68/2025-04-04--13-30-17
GM	CHEVROLET_TRAVERSE	fb4b8ab27080025d/00000041--2cb71e0191
GM	CHEVROLET_VOLT	fed69e3ca8d279dc/00000644--4da2b1bf01
GM	CHEVROLET_VOLT_2019	c90a7d888e9cb72b/00000014--1d901b4c93
GM	GMC_ACADIA	df51b2195de66a9b/0000002b--4804d98571
GM	GMC_YUKON	b513af7447934108/00000008--94b1e36dd5
Mazda	MAZDA_CX5	9f46a57f430101ea/00000008--313148e315
Mazda	MAZDA_CX5_2022	8a9dac95d24c4e8d/2025-04-18--05-38-13
Mazda	MAZDA_CX9_2021	f93472b242797ef0/00000000--48ac3b0974
Rivian	RIVIAN_R1	ff6995b1cb7a5243/00000136--7349553e54
Tesla	TESLA_MODEL_3	fa2c6a0d5a103101/00000017--ea70a24924
Tesla	TESLA_MODEL_Y	fe762237b0631835/00000036--91b82f180c

Tests
100% coverage for all brands in opendbc/safety/tests/test_ignition.py:

• ignition on/off, wrong bus, unknown addr
• Rivian/Tesla counter gating

Adding new ignition hook

1. Add can ignition block in ignition.h
2. Add _<brand>_msg() helper and tests to test_ignition.py

Merge sequence
opendbc -> panda -> openpilot bump