Add "Truncated" boolean property into Core.Projects.Line model

[csvbdeveloper]

BrowseProjectRepositoryPath returns file content as an array of text lines.
If the text line size is more than a constant (~5000 chars), the returned text is truncated, and the "Truncated" property value is true on the model.

public class Line
{
public string Text { get; set; }
public bool? Truncated { get; set; }
}