Track Composer dependencies

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

.gitignore

@@ -12,6 +12,7 @@ node_modules/
 /static/
 
 # Backend development
+/vendor/
 /lib/vendor/
 coverage/
 phpunit.xml.cache

composer.lock

@@ -0,0 +1,18 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "4d8dc164c6774dbe41dc1f25ae378098",
+    "packages": [],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": {},
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": {},
+    "platform-dev": {},
+    "plugin-api-version": "2.6.0"
+}