[Enhancement] Import Tool for the top level config keys with hyphens.

[Peefy]

Enhancement

For the following YAML

a-b-c: a-b-c

The import tool should generate the following code

{
    "a-b-c" = "a-b-c"
}

Instead of

"a-b-c" = "a-b-c"

This is because the current version of KCL does not support the syntax mentioned in the above code.