[Feature]: support new format file `.vfox.toml`

[aooohan]

1. Your usage scenarios?

.tool-versions file has limited expressive capabilities. In v1.0.0, we will use a new file format .vfox.toml as the primary format, while still compatible with .tool-versions.

2. What is your expected outcome?

The new format is as follows:

[tools]
nodejs = '21.5.1'
java = {version = '1.1.1' , flag=true}

[trymeouteh]

Would like option to have a vfox.tml and .vfox.toml file to be able to decide if the file is hidden or visible