Add command to get all transactions by state with filters (senderId, limit or offset)

[ishantiw]

Description

This is related to issue #600.
Getting a transaction by transaction Id is addressed in PR #647.

We need below commands too,

• Get all transactions in unprocessed or unsigned state by senderId.
• Get all transactions in unprocessed or unsigned state by filters limit or offset
• Both of the above

Expected behaviour:

get transaction unsigned --senderId --limit --offset
sign [transaction]
broadcast [signature]

Versions

1.0.0

Additional Information

http://localhost:4000/api/node/transactions/unsigned