Grove LED Shields DTS Binding

This integration test verifies the DTS binding of the Grove LED Shields against all possible boards and shields that are supported by Zephyr and Bridle.

Depending on the number of compatible boards, this test suite will take several hours to complete:

west twister \
     --jobs 4 \
     --verbose \
     --inline-logs \
     --quarantine-list bridle/tests/quarantine.yaml \
     --testsuite-root bridle/tests/shields/grove_led/dts_bindings

With the option --cmake-only the test time can be reduced significantly, but then the runtime filter will not act as expected and the filtering rules become ineffective:

west twister \
     --jobs 4 \
     --verbose \
     --cmake-only \
     --inline-logs \
     --quarantine-list bridle/tests/quarantine.yaml \
     --testsuite-root bridle/tests/shields/grove_led/dts_bindings

Even more time can be saved with the option --integration by limiting the test runs to the boards currently supported by this shield and that will be used for maintenance:

west twister \
     --jobs 4 \
     --verbose \
     --inline-logs \
     --integration \
     --quarantine-list bridle/tests/quarantine.yaml \
     --testsuite-root bridle/tests/shields/grove_led/dts_bindings