Add support for TEALv6 opcodes

[geo2a]

Is there a plan to work on adding support for the new TEALv6 opcodes?

I'm primarily interested to be able to generate control-flow graphs of TEALv6 programs with Tealer, hence I suggest adding:

• Representation of TEALv6 instructions into tealer/teal/instructions/instructions.py
• Representation of Account Parameters Fields into a new file, tealer/teal/instructions/instructions.py, which are required for the acct_params_get f instruction.
• New parsing rules into tealer/teal/instructions/parse_instruction.py
• Relevant tests

I'm eager to work on this, but I wouldn't want to scoop other's effort, if somebody already planning to work on it.

[dguido]

Yes! Please, we'll even gladly compensate you for it. Email me dan@trailofbits.com when you want to start working on it (or after you're done). Keeping up with new language features is always a challenge and we appreciate the help.