Add PicLisp support for the platform module.
Cleanup platform module.
Include picolisp_mod.h instead of pico.h
terminal module for picoLisp.
Add picoLisp terminal module references here.
platform_conf.h now configures picoLisp build.

The MCU specific functions can now be included
in the picoLisp build by touching platform_conf.h

Although the data structures in picoLisp are
really easy, we'll not touch src/tab.c manually
(like how picoLisp does this for all Lisp
functions). This patch defines eLua's _ROM macro
for picoLisp.
Add module file for picoLisp.

Much like auxmods.h for Lua and picoc_mod.h
for PicoC, add picolisp_mod.h for picoLisp.
Define PICOLISP_PLATFORM_LIBS_ROM for picoLisp.