Adds math opcodes

[3commascapital]

These changes print out math opcodes that take 2 inputs and push its result to the top of the stack. The list of operators and appropriate typing can be found in math2.ts. I found that it was a cleaner diff to break the switch pattern being used in opcodes/index.ts but I am willing to use it if required. I plan to add the 3 input opcodes as well. Happy to do these changes in pieces if desired.

[3commascapital]

I think the main thing to discuss is the coerceMathOperations variable. currently i am hard coding it. however, this could be turned into some sort of strategy configuration from the user. I am thinking about the following for this input:

• HEX: show all numbers as hex data
• ABS: get all of the matching permutations in checkOperation2, sort by the deviation from zero, preferencing non negative numbers, use the lowest one
• UINT: show all numbers as uint, don't care about ints
• some other strategy

[3commascapital]

any thoughts @zemse ?

[zemse]

Sorry for the delay, I'll try to review this sooner.