Dev jganser issue63 multiple configs for cli

[jganser]

Optional approach to allow glob pattern selection of multiple vale.ini files via the vale-vscode extension.

Includes code to handle single file opened in vscode (not inside a workspace or folder).

[jganser]

#63

[jdkato]

As explained in #63, this is a built-in feature of Vale. The following .vale.ini file accomplishes the same goal:

StylesPath = styles
MinAlertLevel = suggestion

[*en/src/*.rst]
BasedOnStyles = Vale

[*de/src/*.rst]
BasedOnStyles = write-good

So, I don't think it makes sense to introduce this complexity into the extension's configuration.