Expanded bindings and included script to auto-generate partial files

[timstableford]

• The script under utils/ can generate build.sh entries, along with headers and bindings by parsing the surprisingly well structured lua header files.
• Moved the resume wrapping/abstraction into thread to keep luawasm more succint.
• The following functions have not been bound:
  • luaL_error - var args input
  • luaL_checkoption - accepts an array of strings
  • debug_realloc - test function
  • luaB_opentests - test function
  • lua_pushvfstring - var args
  • lua_pushfstring - var args
  • lua_gc - var args