Analyses the other initiatives for adding Lua to Zephyr

[rodrigopex]

Found initiatives:

1. https://gitlab.com/prv-labs/lua
2. https://github.com/lromeraj/lua-zephyr-module
3. https://codeberg.org/gsou/lua-zephyr
4. https://github.com/tenllado/lua

[1] The most mature one. It is from PRV Labs. They have a presentation at the Zephyr Developer Summit 2023. However, the last change was 3 years ago.

Zephyr issues and PRs related to the Lua module:

• Embedded Lua shell for Zephyr zephyrproject-rtos/zephyr#89459
• Module request: Lua zephyrproject-rtos/zephyr#47301
• Adding, building and linking Lua in a project zephyrproject-rtos/zephyr#45485

[cfriedt]

Also, zephyrproject-rtos/zephyr#97226