Increase debounce from 150ms to 1000ms and skip updates when theme
hasn't changed. Deduplicate plugin list to prevent double apply when
plugins are loaded from both system and user directories.

- service: rewrite service code in ContenT language

- initial build for Additives

1. big fixes in the reaction mode for changing the config file.
2. current mode (light/dark) is now visible in thhelp,force-file-reactione config.
3. added flags: h,help,force-file-reaction
4. other
code improvements

Replaced deprecated 'toggled' to 'clicked' +fixed button color (it is not the correct fix, I think..)

GUI on Yad is forever in my heart ,- ,