* chore(lua): revert useless c light function change
This change was part of the eLua LTR patches (based on 5.1), whereby this feature was already integrated in Lua 5.2.
* feat(lua): port of NodeMCU Lua53 read-only tables
# Conflicts:
# radio/src/lua/CMakeLists.txt
# radio/src/lua/api_general.cpp
* fix(nv14): missing SDRAM definition
* fix: l_mathop
* fix: use float functions in drawPower()
* fix: ltable resize
* fix: correct name is "bit32"
* fix: first Lua context must be closed last
As the lookup cache is attached to that one
* Revert to Lua using double
* Ensure byte-code compatibility
* Fix possible compatibility issue with `lua_typename`/`luaL_typename`
* Fix Bitmap symbol table
* Re-add table lib for COLORLCD
Fixes#2921: getValue() now also returns pilot position
Fixes#3062: Close any Lua open files when radio powers off
Fixes#3095: Lua string library added (only 6k bytes of flash used)
Re #3095: luaGetVersion() also returns version as numbers
(Ported from master 7ef790d3..4d0bd14ad and squashed into one commit)
