Added "open in code editor" option to asset browser

[adriengivry]

Description

Simple open in code editor implementation:

• Allow the user to enter a custom command
• Defaults to Visual Studio Code (code)

Also added SystemCalls::ExecuteCommand to properly hide the cmd.exe when running a command (common issue with std::system)

Tested on both Windows 11 and Linux Mint.

Inspired by #659, co-authored by @Gopmyc

Related Issue(s)

Fixes #389

Review Guidance

Write here.

Screenshots/GIFs

Default code editor command (vscode)

Example setup to use nvim through ghostty

Available on all files and folders

Checklist

• My code follows the project's code style guidelines
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly
• My changes don't generate new warnings or errors

[Gopmyc]

I admit it’s cleaner