added paragraph formatting methods to numbering Level

ts/numbering/level.ts

@@ -1,3 +1,4 @@
+import * as paragraph from "../docx/paragraph/formatting";
 import { ParagraphProperties } from "../docx/paragraph/properties";
 import { RunProperties } from "../docx/run/properties";
 import { Attributes, XmlAttributeComponent, XmlComponent } from "../docx/xml-components";
@@ -86,4 +87,51 @@ export class Level extends XmlComponent {
         this.runProperties.push(property);
         return this;
     }
+
+    // --------------------- Paragraph formatting ------------------------ //
+
+    public center(): Level {
+        this.addParagraphProperty(new paragraph.Alignment("center"));
+        return this;
+    }
+
+    public left(): Level {
+        this.addParagraphProperty(new paragraph.Alignment("left"));
+        return this;
+    }
+
+    public right(): Level {
+        this.addParagraphProperty(new paragraph.Alignment("right"));
+        return this;
+    }
+
+    public justified(): Level {
+        this.addParagraphProperty(new paragraph.Alignment("both"));
+        return this;
+    }
+
+    public thematicBreak(): Level {
+        this.addParagraphProperty(new paragraph.ThematicBreak());
+        return this;
+    }
+
+    public maxRightTabStop(): Level {
+        this.addParagraphProperty(new paragraph.MaxRightTabStop());
+        return this;
+    }
+
+    public leftTabStop(position: number): Level {
+        this.addParagraphProperty(new paragraph.LeftTabStop(position));
+        return this;
+    }
+
+    public indent(left: number, hanging?: number): Level {
+        this.addParagraphProperty(new paragraph.Indent(left, hanging));
+        return this;
+    }
+
+    public spacing(params: paragraph.ISpacingProperties): Level {
+        this.addParagraphProperty(new paragraph.Spacing(params));
+        return this;
+    };
 }