JavaAssembler

[CodeCracker]

JavaAssembler: java instructions from string:
- Ability to replace whole body instruction as string ("Full instruction editor" option on method body),
- Ability to disassemble whole class and save result to txt file ("Dissasemble" option)
and then replace all methods instructions from that txt file ("Replace with dissasm" option)
- Search and replace instruction string ("Search and replace" option)

Adding new constant pools which aren't already there is not currently supported,
I means adding automatically new members, strings, doubles, etc.