merge of library transaction builders into SDK

[evias]

Issue scope

The nem2-library-js src/transactions/ classes must be merged over in the SDK.

This merge will need a new folder src/infrastructure/transaction/builders for the builder classes.

This process is dependent of nemtech/nem2-library-js#22 and will also include merging over src/schemas/ and src/buffers from the library into the SDK's src/model/transaction folder.

After the merge of the builder classes, the SDK's src/model/transaction classes must be updated to use the new in-SDK builders instead of the library's builders.

References :

• src/transactions
• Merge features from nem2-library-js into reference SDK #61 : Merge of Library & SDK
• [Elephant] Use catbuffer for Schemas and Buffers generation #92 : use Catbuffer for Schemas and Buffers
• nemtech/nem2-library-js#22 : use Catbuffer for Schemas and Buffers