[Issue: 1291] Update cd-* scripts to deploy staging (#1821)

## Summary
Fixes #1291
Fixes #1549 

### Time to review: __1 min__

## Changes proposed
* add `staging` input to `cd-api` and `cd-frontend` files

## Context for reviewers
> The cd files need to be configured to also deploy the staging
environment

## Additional information
N/A

.github/workflows/cd-analytics.yml

@@ -1,7 +1,7 @@
 name: Deploy Analytics
 # Need to set a default value for when the workflow is triggered from a git push
 # which bypasses the default configuration for inputs
-run-name: Deploy ${{ github.ref_name }} to Analytics ${{ inputs.environment || (github.event_name == 'release' && 'prod') || 'dev' }}
+run-name: Deploy ${{ github.ref_name }} to Analytics ${{ inputs.environment || (github.event_name == 'release' && 'prod') || fromJSON('["dev", "staging"]')}}
 
 on:
   push:
@@ -35,4 +35,4 @@ jobs:
     uses: ./.github/workflows/deploy.yml
     with:
       app_name: "analytics"
-      environment: ${{ inputs.environment || (github.event_name == 'release' && 'prod') || 'dev' }}
+      environment: ${{ inputs.environment || (github.event_name == 'release' && 'prod') || fromJSON('["dev", "staging"]') }}

.github/workflows/cd-api.yml

@@ -1,7 +1,7 @@
 name: Deploy API
 # Need to set a default value for when the workflow is triggered from a git push
 # which bypasses the default configuration for inputs
-run-name: Deploy ${{ github.ref_name }} to API ${{ inputs.environment || (github.event_name == 'release' && 'prod') || 'dev' }}
+run-name: Deploy ${{ github.ref_name }} to API ${{ inputs.environment || (github.event_name == 'release' && 'prod') || fromJSON('["dev", "staging"]') }}
 
 on:
   push:
@@ -20,6 +20,7 @@ on:
         type: choice
         options:
           - dev
+          - staging
           - prod
 
 jobs:
@@ -33,4 +34,4 @@ jobs:
     uses: ./.github/workflows/deploy.yml
     with:
       app_name: "api"
-      environment: ${{ inputs.environment || (github.event_name == 'release' && 'prod') || 'dev' }}
+      environment: ${{ inputs.environment || (github.event_name == 'release' && 'prod') || fromJSON('["dev", "staging"]') }}

.github/workflows/cd-frontend.yml

@@ -1,8 +1,7 @@
 name: Deploy Frontend
 # Need to set a default value for when the workflow is triggered from a git push
 # which bypasses the default configuration for inputs
-run-name: Deploy ${{ github.ref_name }} to Frontend ${{ inputs.environment || (github.event_name == 'release' && 'prod') || 'dev' }}
-
+run-name: Deploy ${{ github.ref_name }} to Frontend ${{ inputs.environment || (github.event_name == 'release' && 'prod') || fromJSON('["dev", "staging"]') }}
 on:
   push:
     branches:
@@ -20,6 +19,7 @@ on:
         type: choice
         options:
           - dev
+          - staging
           - prod
 
 jobs:
@@ -33,4 +33,4 @@ jobs:
     uses: ./.github/workflows/deploy.yml
     with:
       app_name: "frontend"
-      environment: ${{ inputs.environment || (github.event_name == 'release' && 'prod') || 'dev' }}
+      environment: ${{ inputs.environment || (github.event_name == 'release' && 'prod') || fromJSON('["dev", "staging"]') }}