Implement create and sign any transaction functionality in Lisk Transactions

[MaciejBaj]

Expected behavior

There should be functionality in Lisk Transactions allowing to create and sing any transaction - passing that transaction as a parameter. The functionality should verify only the required properties of transactions (common for all of the transactions):

- receipientId/receipentPublicKey,
- fee
- passphrase 

For that property set, the function creates and signs a transaction, adds the following properties:

- receipientId (if receipentPublicKey was passed),
- signature
- senderPublicKey (derived
- senderId (derived from the senderPublicKey)
- timestamp
- amount (0 by default)
- type

The output is ready to send over the POST /api/transactions API.

Actual behavior

Missing functionality.

Which version(s) does this affect? (Environment, OS, etc...)

2.0.0

[sridharmeganathan]

@lsilvs

Please estimate and see it is possible to do it in our current sprint.