renamed interpolation_dim to time_dim

mlair/configuration/defaults.py

mlair/data_handler/data_preparation_neighbors.py

mlair/data_handler/station_preparation.py

mlair/run_modules/experiment_setup.py

mlair/run_modules/post_processing.py

mlair/run_modules/pre_processing.py

mlair/workflows/default_workflow.py

test/test_data_handler/old_t_data_generator.py

test/test_run_modules/test_experiment_setup.py

test/test_run_modules/test_training.py