Migrate use_gpu from processes to worker runs

arkindex/documents/fixtures/data.json

arkindex/process/builder.py

arkindex/process/migrations/0037_workerrun_use_gpu.py

arkindex/process/models.py

arkindex/process/serializers/imports.py

arkindex/process/serializers/worker_runs.py

arkindex/process/signals.py

arkindex/process/tests/test_corpus_worker_runs.py

arkindex/process/tests/test_create_process.py

arkindex/process/tests/test_processes.py

arkindex/process/tests/test_user_workerruns.py

arkindex/process/tests/test_workerruns.py

arkindex/process/tests/test_workerruns_use_gpu.py

arkindex/sql_validation/list_elements.sql

arkindex/sql_validation/process_elements_filter_ml_class.sql

arkindex/sql_validation/process_elements_filter_type.sql

arkindex/sql_validation/process_elements_top_level.sql

arkindex/sql_validation/process_elements_with_image.sql