Private Data Smart Contract Generator

[lynn14m]

• [x] Find out where the generator is
• [x] Figure out where to add the generator
• [x] Change the app/index.js file to include the private data smart contract subgenerator
• [ ] Write tests for the JavaScript smart contract
• [ ] Write template for the JavaScript smart contract
• [ ] Write the generator for the JavaScript smart contract
• [x] Write tests for the TypeScript smart contract
• [x] Write template for the TypeScript smart contract
• [x] Write the generator for the TypeScript smart contract
• [ ] Write tests for the Java smart contract
• [ ] Write template for the Java smart contract
• [ ] Write the generator for the Java smart contract

[au-shah]

MSPID - let the user know where this is used. Perhaps make it optional so they don't HAVE to provide an MSPId