Get encoder with schema id registry added in result

[kaustuk]

Currently, there is no possible way to get an encoder that can encode the pass object and add schema id together. If we had to do it currently it's 2 steps.

1. encode function to encode data
2. tag_data function to append the schema id.

Purposed approach Merge these 2 steps into 1 and return only 1 encoder. Which client can use directly.

PS: I would like to raise PR with this feature.