feat: Support MacOS And Windows

[KKimj]

Thanks for maintaining MMM-GConnect — it’s been super helpful!

🐛 Problem

On non-Linux systems the module attempted to run a Linux ELF binary (bin/tcx-ls), causing a runtime failure:

/bin/sh: .../bin/tcx-ls: cannot execute binary file

[LOG]   login page title: Success 
[ERROR] Error executing tcx-ls: Error: Command failed: "/MagicMirror/modules/MMM-GConnect/bin/tcx-ls" "/MagicMirror/modules/MMM-GConnect/data/data.tcx" --geojson "/MagicMirror/modules/MMM-GConnect/data/data.json"
/bin/sh: ~/MagicMirror/modules/MMM-GConnect/bin/tcx-ls: cannot execute binary file