Create section properties section

src/file/document/body/section-properties/page-margin/page-margin.ts

@@ -0,0 +1,19 @@
+import { XmlComponent } from "file/xml-components";
+import { PageMarginAttributes } from "./page-margin-attributes";
+
+export class PageMargin extends XmlComponent {
+    constructor(top: number, right: number, bottom: number, left: number, header: number, footer: number, gutter: number) {
+        super("w:pgMar");
+        this.root.push(
+            new PageMarginAttributes({
+                top: top,
+                right: right,
+                bottom: bottom,
+                left: left,
+                header: header,
+                footer: footer,
+                gutter: gutter,
+            }),
+        );
+    }
+}