Allow configure the json file name and location

[Gambero81]

It would be great to be able to allow configure the json file name and location to allow split json translation for components.

Example of component file structure:

Components\Component.razor //<- component page
Components\Component.razor.cs //<- component code behind
Components\Component.razor.scss //<- component style
Components\Component.razor.en //<- component dictionary for english language
Components\Component.razor.it // <- component dictionary for italian language

This structure allow to visual studio to apply automatic neasting:

Component.razor
|-- Component.razor.cs
|-- Component.razor.scss
|-- Component.razor.en
|-- Component.razor.it

Actually i have created multiple json file inside i18nText folder, but it's not a very well maintenable solution because files are all inside a single folder and cannot reply the structure above.