Add API for specifying columns with different widths

src/file/document/body/section-properties/properties/column.ts

@@ -0,0 +1,26 @@
+import { twipsMeasureValue } from "file/values";
+import { XmlAttributeComponent, XmlComponent } from "file/xml-components";
+
+export interface IColumnAttributes {
+    readonly width: number | string;
+    readonly space?: number | string;
+}
+
+export class ColumnAttributes extends XmlAttributeComponent<IColumnAttributes> {
+    protected readonly xmlKeys = {
+        width: 'w:w',
+        space: 'w:space',
+    }
+}
+
+export class Column extends XmlComponent {
+    constructor({width, space}: IColumnAttributes) {
+        super("w:col");
+        this.root.push(
+            new ColumnAttributes({
+                width: twipsMeasureValue(width),
+                space: space === undefined ? undefined : twipsMeasureValue(space),
+            })
+        )
+    }
+}