Publish on npm using CI pipeline

Closes #44 (closed)

package.json

 {
-  "name": "virtual-keyboard",
+  "name": "@teklia/virtual-keyboard",
   "version": "0.1.0",
   "description": "Customizable unicode virtual keyboard on text input.",
-  "private": true,
+  "files": [
+    "dist-lib/**",
+    "src/**"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@gitlab.com/teklia/escriptorium/virtual-keyboard.git"
+  },
+  "author": "Teklia",
   "scripts": {
     "serve-ext": "vue-cli-service build --dest dist-ext --mode development --watch",
     "ext:firefox": "web-ext run --source-dir ./dist-ext/",