Dictionary dumper

[mitra42]

Need a dictionary dumper for platforms such as Arduino where you can't write to flash live without doing something like replacing the Boot rom.

Prequisites:

• [x] Extension functionality See #54

Thinking currently is to....

• [x] Add to webForth via extension
• [x] Walk dictionary, dumping #def's
• [x] Walk memory area dumping words, using #def's where possible

THEN

• Wrapper that launches this extension #61
• Import to Arduino .ino via an include #59

[mitra42]

Basic functionality complete. Needs integration into console; and configured as a include.