Change docx folder to more appropriate "file" folder

src/file/drawing/inline/graphic/graphic-data/pic/blip/blip.ts

@@ -0,0 +1,21 @@
+import { XmlAttributeComponent, XmlComponent } from "../../../../../../xml-components";
+
+interface IBlipProperties {
+    embed: string;
+}
+
+class BlipAttributes extends XmlAttributeComponent<IBlipProperties> {
+    protected xmlKeys = {
+        embed: "r:embed",
+    };
+}
+
+export class Blip extends XmlComponent {
+
+    constructor(referenceId: number) {
+        super("a:blip");
+        this.root.push(new BlipAttributes({
+            embed: `rId${referenceId}`,
+        }));
+    }
+}