Update extension

[tomaszbk]

• use new vls (https://github.com/vlang/vls)
• prompt to install new vls if not present
• prompt to install v lang if not present
• update packages and github workflows
• add debug launch options to easily test the extension
• add v.mod syntax support (based on @0x9ef 's PR)
• add new configs, forcing vls to be reinstalled, vlsBuildPath
• added npm run fmt command, formatted code with prettier
• refactored code and dropped unused/old functions
• improves logs, renamed debug.ts to logger.ts
• defaults installs of v and vls to ~/.local/bin/v and ~/.local/bin/vls
• update readme

[medvednikov]

Hey

Thanks a lot for your work!

Sorry for the delay, we missed this PR. Will integrate it asap.