Webex integration (#7651)

* start webex app creation

* webex integration wip

* fix lint errors

* fix lint errors

* add webex env vars in appStore.example

* webex app wip

* fix lint errors

* edit webex oauth scopes

* add location in webex app config

* add site url placeholder and regex in webex config location

* debug translateEvent

* fix utc formatting for event start time, add test boilerplate for webex, add envs

* fix location and datetime formatting

* get correct videoCredentials for deleteMeeting

* Move webex specific readme content to webex README

* Fix app not visible in app-store

* Delete setup route

* add webex icon

* delete prev icon

* webex api fix

* add app screenshots

* Revert tests changes as they dont run

* Use config instead of hardcoding vales

* Update README

* Remove all env variables related to WEBEX app. They can be added through settings->admin->apps interface

* update from origin

* fix icon path

* update webex readme

* Update yarn.lock

* update webex readme

* Remove unnecessary URL from webex

* revert changes in cancel booking handler

* simply webex zod schemas, logs for debugging

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Co-authored-by: Peer Richelsen <peeroke@gmail.com>
Co-authored-by: Hariom Balhara <hariombalhara@gmail.com>