imu: the WT61 on any USB-UART adapter, in the car's frame, on yukart/imu/*

Finds the module itself (every non-modem adapter, 115200 then 9600), so the
adapter can be swapped. Mounting by --forward/--right; attitude from a
complementary filter on gravity (gyro through motion, accelerometer near 1 g);
gravity removed from acceleration; yaw rate left-positive. Never writes to
the module. dialout via SupplementaryGroups.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DDwfd6Ki8UfG4hK6W5YpJz

scripts/deploy-imu.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+# Build imu natively on the development Orin and install it on the car Orin as
+# yukart-imu: scripts/deploy-native.sh does the work.
+#
+#   usage: scripts/deploy-imu.sh [host]       (default: mikkeli-orin-nano)
+exec "$(dirname "$0")/deploy-native.sh" imu "$@"