`input_data` for the pipeline -- design mechanism for supporting an output independing of the sequence of elements

[nicolay-r]

input_data -- those that depends on the prior pipelines context_data -- data that might be defined before the launch of the pipeline

• [x] done for sampler (https://github.com/nicolay-r/ARElight/commit/10298dc08ff887f5e1549c031cabaa88970c21c4)
• [x] refactoring BERT-based engines
• [x] D3JS
• [x] #94
• [x] NER (https://github.com/nicolay-r/ARElight/commit/6b5c621c11ec2cec9dad7b3cfc685cc878450686)