perf(video): add sanity checks and update ECC baselines for grayscale and color

[DDmytro]

In opencv#27524 ECC gained multichannel (1/3-channel) support; perf tests were left without sanity due to missing baselines. Related opencv PR opencv/opencv#27944

• This PR adds the required sanity entries for the new test layout (C1/C3, all motion types).
• No functional changes; data-only.

Repro:

export OPENCV_TEST_DATA_PATH=<opencv_extra>/testdata
python2 <opencv>/modules/ts/misc/run.py <build> -t video --check --perf_write_sanity --gtest_filter='*ECC*'
python2 <opencv>/modules/ts/misc/run.py <build> -t video --check --gtest_filter='*ECC*'

[DDmytro]

@asmorkalov, @alalek Main PR opencv/opencv#27944 has been merged. This PR contains matching perf sanity data for ECC (C1/C3, all motion types). Please merge to keep perf baselines in sync for 4.x. Thanks!