added new combined datasets

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_4_rgb.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_5.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_5_rgb.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_6.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_6_rgb.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_7.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_7_rgb.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_8.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_8_rgb.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_9.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/fold_9_rgb.py

src/ptbench/configs/datasets/mc_ch_in_11kv2_RS/rgb.py

...ench/configs/datasets/tbx11k_simplified_v2_RS/__init__.py

...bench/configs/datasets/tbx11k_simplified_v2_RS/default.py

...tbench/configs/datasets/tbx11k_simplified_v2_RS/fold_0.py

...tbench/configs/datasets/tbx11k_simplified_v2_RS/fold_1.py

...tbench/configs/datasets/tbx11k_simplified_v2_RS/fold_2.py

...tbench/configs/datasets/tbx11k_simplified_v2_RS/fold_3.py

...tbench/configs/datasets/tbx11k_simplified_v2_RS/fold_4.py

...tbench/configs/datasets/tbx11k_simplified_v2_RS/fold_5.py