Solthiruthi - queues based framework - document flow for palnilai/multipass thiruthi

[arcturusannamalai]

Solthiruthi - queues - document flow

1. Split words from document into entity/non-entity with line/col info attributes
2. Each entity has 'is_error' Boolean attribute, and a 'reason' list of strings attribute.
3. File read process puts this data into a queue.
4. Each pass/nilai will read words, process them and put them back in output queue