Fix closing string

Refactored some code, added update loop for chatmix and external exe run

Typo

Bump to 0.19.4

fix: update repository URL in winget release step

Update mainwindow.cpp

Merge pull request #16 from ModoloDev/main

Merge pull request #15 from ModoloDev/main

Update GUI version to 0.18.6 and set working directory for startup sh…

…ortcut

Merge pull request #14 from CosmicFusion/main