Feat/app env vars (#430)

* initial changes for env var support

* WIP

* Update applications.js

* JSON stringify before encrypting

* use call_hook.url

* env vars working

GET /v1/AppEnv?url=[URL] to trigger options request to URL and return app-schema
POST /v1/Applications with {env_vars: [OBJECT} to create app with env vars
PUT /v1/Applications/[SID] with {env_vars: [OBJECT} to change env vars
GET returns env vars

POST and PUT will also trigger an OPTIONS request to the call_hook url to get schema and then validate the env_vars against it

* update appenv cannot finish request.

* wip

* wip

* wip

* wip

---------

Co-authored-by: Dave Horton <daveh@beachdognet.com>
Co-authored-by: Quan HL <quan.luuhoang8@gmail.com>
Co-authored-by: Hoan Luu Huu <110280845+xquanluu@users.noreply.github.com>

package.json

@@ -35,6 +35,7 @@
     "@jambonz/time-series": "^0.2.8",
     "@jambonz/verb-specifications": "^0.0.72",
     "@soniox/soniox-node": "^1.2.2",
+    "ajv": "^8.17.1",
     "argon2": "^0.40.1",
     "assemblyai": "^4.3.4",
     "cors": "^2.8.5",