Collect all SH-2 instructions

[Aeonitis]

Collect all SH-2 instructions we come across and reference the file we found them in comments below.

Need to examine if this doc is also really complete:

• "All" assembly definitions ~ superh.sinc
• certification.manifest
• SuperH languages

[Aeonitis]

This can be closed once I confirm why I have ?? instructions in my assembly code, to ensure all opcodes in ROM data is captured and understood.