Add Tab Stops to Word Paragraphs

[PrzemyslawKlys]

This PR:

• Adds the ability to Add TabStops
• Adds the ability to modify DefaulTabStops
• Adds the ability to modify CharacterSpacingControl
• Adds the ability to modify existing tab stops
• Should resolve No way to adjust or create tab stops on WordParagraph objects #89

internal static void Example_BasicTabStops(string folderPath, bool openWord) {
    Console.WriteLine("[*] Creating standard document with paragraphs");
    string filePath = System.IO.Path.Combine(folderPath, "Basic Document with some tab stops.docx");
    using (WordDocument document = WordDocument.Create(filePath)) {
        var paragraph = document.AddParagraph("\tFirst Line");

        document.Settings.DefaultTabStop = 2880;
        document.Settings.CharacterSpacingControl = CharacterSpacingValues.DoNotCompress;

        Console.WriteLine("Tabs count: " + paragraph.TabStops.Count);

        var tab1 = paragraph.AddTabStop(1440);

        var tab2 = paragraph.AddTabStop(1440);
        tab2.Alignment = TabStopValues.Left;
        tab2.Leader = TabStopLeaderCharValues.Hyphen;
        tab2.Position = 1440;

        paragraph.AddText("\tMore text");

        Console.WriteLine($"Tabs count: " + paragraph.TabStops.Count);

        var paragraph1 = document.AddParagraph("\tNext Line");

        var tab3 = paragraph1.AddTabStop(5000);
        tab3.Leader = TabStopLeaderCharValues.Hyphen;

        var tab4 = paragraph1.AddTabStop(1440 * 2);
        paragraph1.AddText("\tEven more text");

        Console.WriteLine("Tabs for Paragraph2 count: " + paragraph.TabStops.Count);
        Console.WriteLine("Tabs for Paragraph1 count: " + paragraph1.TabStops.Count);
        Console.WriteLine("Default tab stop: " + document.Settings.DefaultTabStop);
        Console.WriteLine("Default tab stop: " + document.Settings.CharacterSpacingControl);

        document.Save();
    }

    using (WordDocument document = WordDocument.Load(filePath)) {

        document.Save(openWord);
    }
}