Added github actions workflow for auto deployment to both s3 and asti servers

Changed to staging. Created branch for staging.

# Summary 

- Fixes #186
- The `load` event isn't firing on NOAH Studio. As such, the `centerListener()` method isn't called which is responsible for the zooming in to the selected place. However, `style.load` do get called. The fix implemented here is to also use the event `style.load` to call the methods that were previously called by upon the firing of the `load` event but only listen to `style.load` once.
  - We need to further investigate **why** `load` doesn't work on Studio in iOS but works in KYH
- Confirming that only the NOAH Studio is affected by this issue.
 
# Demo

![Kapture 2021-10-05 at 22 49 45](https://user-images.githubusercontent.com/11599005/136047077-d0da7a85-9157-4d01-bae9-07a6039fd9c1.gif)

* Added if condition to run workflow only on successful PR merge. (#195)

* Checking proper automation workflow. Will revert this small change upon validation. (#196)

* Checking proper automation workflow. Will revert this small change upon validation.

* Changed trigger for deployment workflow. Revert small change to bibliography.

* Added AWS deployment workflow