feat: rethink how key retrevial is structued and add e2e test

package.json

@@ -4,7 +4,8 @@
   "description": "A Github Action that allows you to consume vault secrets as secure environment variables.",
   "main": "index.js",
   "scripts": {
-    "test": "jest"
+    "test": "jest",
+    "test:e2e": "jest -c e2e/jest.config.js"
   },
   "repository": {
     "type": "git",
@@ -26,8 +27,7 @@
   "homepage": "https://github.com/RichiCoder1/vault-action#readme",
   "dependencies": {
     "@actions/core": "^1.1.1",
-    "got": "^9.6.0",
-    "jsonpath": "^1.0.2"
+    "got": "^9.6.0"
   },
   "devDependencies": {
     "@types/jest": "^24.0.18",