Add experimental incomplete combined js libs

libs/combined/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "bip39-tool-external-libs",
+  "version": "0.4.0",
+  "scripts": {
+    "build": "browserify index.js --standalone libs > /tmp/bip39-libs.js"
+  },
+  "dependencies": {
+    "bip38": "2.0.2",
+    "bitcoinjs-lib": "3.3.2",
+    "base-x": "3.0.7",
+    "ed25519-hd-key": "^1.0.0",
+    "ethereumjs-util": "6.0.0",
+    "stellar-base": "^0.10.0"
+  },
+  "devDependencies": {
+    "browserify": "^16.2.3",
+    "uglify-es": "^3.3.9"
+  }
+}