[debugger] exec is reporting the incorrect number of bytes used

[KungFuFurby]

The number of bytes that exec reports on each opcode is five. This causes RET, branch and jump opcodes to stick out like a sore thumb, because it reports bytes after the opcode as being executed when in fact they aren't.

This is both a SPC Debugger-side and a LibGME_M-side bug:

• On the SPC Debugger side, the for loop is what causes the five bytes to be output as executed in the first place.
  https://github.com/bazzinotti/snestracker/blob/70e085b8dff0c0608ea68d07fa25eb216ec89a9c/pc/debugger/report.cpp#L13-L27
• On the Lib_GME_M side, incomplete reporting would probably expose everything else when the for loop is removed and cause dots of red to appear instead of a line of them. For this reason, the reporting needs to be updated to account for all of the opcodes and all of their parameters.