Created script for building firefox package file

firefox/build-package.py

@@ -0,0 +1,22 @@
+import json
+
+with open("../package.json") as json_file:
+    project_package = json.load(json_file)
+
+with open("package.json") as json_file:
+    ext_package = json.load(json_file)
+
+switcher = {
+    'name': 'title',
+    'name': 'name',
+    'version': 'version',
+    'description': 'description',
+    'author': 'author',
+    'license': 'license'
+}
+
+for key, value in enumerate(switcher):
+    ext_package[value] = project_package[key]
+
+with open('package.json', 'w') as file:
+    json.dump(ext_package, file)