AlgodV2: Add disassemble/decompile function to correspond with new disassemble endpoint

[kael-shipman]

Problem

There was recently a new disassemble endpoint implemented on the node software to allow you to get human-readable TEAL code from bytecode: https://github.com/algorand/go-algorand/pull/3908. However, there is no corresponding function for the Javascript AlgodV2 client.

Solution

Add a function to correspond to this new endpoint. While I do not like the name, disassemble, used in the endpoint, I believe it's important to maintain consistency between the implementations, so I propose the following function signature:

interface AlgodV2Interface {
  //....
  disassemble(bytecodeHex: string): Promise<string>;
}

Dependencies

Figure out who needs to sign off on the proposed addition.

Urgency

Not urgent.