Fix DASM and Merlin, add Asar, improve cc65

[georgjz]

• Added a new grammar to support Asar Assembler
  • SPC700 and SuperFX opcodes are missing yet. I plan to extract them from the SNES cc65 grammar
• DASM and Merlin should work now
• cc65
  • Added some missing commands and constants
  • Changed some scopes to improve readability
  • Added a new grammar for the linker config files ld65 uses
  • Updated the link in README.md
• Fixed hex numbers with a trailing h
• Add missing commands to WDC tools

[MatthewCallis]

@georgjz did you want to wait to add the SPC700 and SuperFX opcodes before merging?

[MatthewCallis]

@georgjz I've also added you as a collaborator on the project!

[georgjz]

@MatthewCallis Thank you for adding me! I already started doing it, I'll update and merge it as soon I finish it.

[georgjz]

I'm sorry for my late reply, I finally got around playing Breath of the Wild(it's f:heart::heart::heart:ing amazing) which distracted me a lot. I added the SPC-700 and SuperFX opcodes.