Improve import alias

@file/ and @export/ instead of file/ and export/ etc

src/export/formatter.spec.ts

@@ -2,9 +2,9 @@ import { assert, expect } from "chai";
 import * as sinon from "sinon";
 
 import { Formatter } from "@export/formatter";
-import { Paragraph, TextRun } from "file";
-import { CoreProperties } from "file/core-properties";
-import { Attributes } from "file/xml-components";
+import { CoreProperties } from "@file/core-properties";
+import { Paragraph, TextRun } from "@file/paragraph";
+import { Attributes } from "@file/xml-components";
 
 describe("Formatter", () => {
     let formatter: Formatter;

src/export/formatter.ts

@@ -1,4 +1,4 @@
-import { BaseXmlComponent, IContext, IXmlableObject } from "file/xml-components";
+import { BaseXmlComponent, IContext, IXmlableObject } from "@file/xml-components";
 
 export class Formatter {
     // tslint:disable-next-line: no-object-literal-type-assertion

src/export/packer/image-replacer.spec.ts

@@ -1,6 +1,6 @@
 import { expect } from "chai";
 
-import { Media } from "file";
+import { Media } from "@file/media";
 
 import { ImageReplacer } from "./image-replacer";
 

src/export/packer/image-replacer.ts

@@ -1,4 +1,4 @@
-import { IMediaData, Media } from "file/media";
+import { IMediaData, Media } from "@file/media";
 
 export class ImageReplacer {
     public replace(xmlData: string, mediaData: IMediaData[], offset: number): string {

src/export/packer/next-compiler.spec.ts

@@ -2,7 +2,9 @@
 import { expect } from "chai";
 import * as sinon from "sinon";
 
-import { File, Footer, Header, Paragraph } from "file";
+import { File } from "@file/file";
+import { Footer, Header } from "@file/header";
+import { Paragraph } from "@file/paragraph";
 
 import { Compiler } from "./next-compiler";
 

src/export/packer/next-compiler.ts

@@ -1,7 +1,8 @@
 import * as JSZip from "jszip";
 import * as xml from "xml";
 
-import { File } from "file";
+import { File } from "@file/file";
+
 import { Formatter } from "../formatter";
 import { ImageReplacer } from "./image-replacer";
 import { NumberingReplacer } from "./numbering-replacer";

src/export/packer/numbering-replacer.ts

@@ -1,4 +1,4 @@
-import { ConcreteNumbering } from "file";
+import { ConcreteNumbering } from "@file/numbering";
 
 export class NumberingReplacer {
     public replace(xmlData: string, concreteNumberings: ConcreteNumbering[]): string {

src/export/packer/packer.spec.ts

@@ -2,7 +2,8 @@
 import { assert } from "chai";
 import { mock, stub } from "sinon";
 
-import { File, HeadingLevel, Paragraph } from "file";
+import { File } from "@file/file";
+import { HeadingLevel, Paragraph } from "@file/paragraph";
 
 import { Packer } from "./packer";
 

src/export/packer/packer.ts

@@ -1,4 +1,5 @@
-import { File } from "file";
+import { File } from "@file/file";
+
 import { Compiler } from "./next-compiler";
 
 /**