fix: proper files and repository url

Author: sunwrobert

package.json

@@ -3,7 +3,17 @@
   "version": "1.0.0",
   "license": "MIT",
   "author": "OpenSea Developers",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/ProjectOpenSea/seaport-js.git"
+  },
+  "bugs": {
+    "url": "https://github.com/ProjectOpenSea/seaport-js/issues"
+  },
   "main": "lib/index.js",
+  "files": [
+    "lib"
+  ],
   "scripts": {
     "build": "hardhat compile && tsc -p tsconfig.build.json",
     "check-types": "tsc --noEmit -p src/__tests__/tsconfig.json",