feat: webshipper (#118)

* register fulfillment providers as singletons

* fix: adds subscribers/api endpoints and webhook handlers

* Adds readme

* Allow document attachments to orders:

* chore: gitignore utils

* chore: rm compiled files

packages/medusa-fulfillment-webshipper/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "medusa-fulfillment-webshipper",
+  "version": "1.0.0",
+  "description": "Webshipper Fulfillment provider for Medusa",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/medusajs/medusa",
+    "directory": "packages/medusa-fulfillment-webshipper"
+  },
+  "author": "Sebastian Rindom",
+  "license": "MIT",
+  "devDependencies": {
+    "@babel/cli": "^7.7.5",
+    "@babel/core": "^7.7.5",
+    "@babel/plugin-proposal-class-properties": "^7.7.4",
+    "@babel/plugin-transform-runtime": "^7.7.6",
+    "@babel/preset-env": "^7.7.5",
+    "@babel/runtime": "^7.9.6",
+    "client-sessions": "^0.8.0",
+    "cross-env": "^5.2.1",
+    "eslint": "^6.8.0",
+    "jest": "^25.5.2"
+  },
+  "scripts": {
+    "build": "babel src -d .",
+    "prepare": "cross-env NODE_ENV=production npm run build",
+    "watch": "babel -w src --out-dir . --ignore **/__tests__"
+  },
+  "peerDependencies": {
+    "medusa-interfaces": "1.x"
+  },
+  "dependencies": {
+    "axios": "^0.20.0",
+    "body-parser": "^1.19.0",
+    "cors": "^2.8.5",
+    "express": "^4.17.1",
+    "medusa-core-utils": "^1.0.10"
+  },
+  "gitHead": "3cc7cbe5124cbcbb75f6e1435db4dcfaa2a60408"
+}